ENTERING THE TWILIGHT ZONE

Bigger Garden, Same Size

Over the years I’ve greatly expanded my vegetable garden, for bigger harvests, without making it any bigger. How? By what I have called (in my book Weedless Gardening) multidimensional gardening.

I thought about this today as I looked upon a bed from which I had pulled snow peas and had just planted cauliflower, cabbage, and lettuce. Let’s compare this bed with the more traditional planting of single rows of plants, each row separated by wide spaces for walking in for hoeing weeds, harvesting, and other activities. No foot ever sets foot in my beds, which are 3 feet wide. Rather than the traditional one dimensional planting, I add a dimension — width — by planting 3 rows up that bed. Or more, if I’m planting smaller plant such as carrots or onions.
Bed of lettuce and chinese cabbage'
Let’s backtrack in time to when the bed was home to peas. Oregon Sugar Pod peas grow about 3 feet tall, so after planting them in early April, I made accommodations for them to utilize a third dimension in that bed, up. A three foot high, temporary, chicken wire fence allowed them to grow up, flanked on one side by a row of radishes and on the other side by a row of lettuce.

Bed of onions

60 pounds of onions in 33 square feet!

There you have it, 3 dimensions. The bed length. The bed width, only three feet wide, with three or more rows down its length. And up.

A Fourth Dimension

Three dimensions isn’t the end of the story for multidimensional gardening. Time is another dimension. Neither peas nor radishes nor lettuce, occupy any bed for a whole season. Peas peter out in hot weather which, along with longer days, tells radish and lettuce plants that it’s time to go to seed. Those conditions tell me that radish roots are getting pithy and lettuce gets bitter, so out they go.

In my planting of cabbage, cauliflower, and lettuce, closer planting is possible because it allows room for longer maturing plants to expand as quicker maturing plants get harvested and out of the way. The middle row of the bed is planted to Charming Snow cauliflower, which will be ready for harvest around the first half of September. I can’t dawdle with that harvest because, left too long, cauliflower curds become loose and quality plummets.

I’ve planted Early Jersey Wakefield cabbage — an heirloom variety noted for its flavor — in a row eight inches away from the row of cauliflowers. The plants in the cabbage row are staggered with those in the cauliflower row, putting a little more space between plants from one row to the other. Early Jersey Wakefield will mature towards the end of September; no need to run out and harvest them all once they’re ready. In cool weather, the heads stay tasty and solid right out in the garden.

The row of Bartolo cabbage — a good storage variety — flanks the cauliflower on the other side of the bed. Bartolo requires 115 days to maturity.

Between each of the cabbage plants I’ve transplanted one or two lettuce seedlings. They’ll be ready for harvest and starting to get out of the way within a couple of weeks.

Mixing and Matching

How long a vegetable takes to mature, what kind of weather it likes, and the length of the growing season all need to be considered in order to make best use of four dimensions in the vegetable garden. Doing so, it’s often possible to grow three different crops in the same bed in a single season.

Here’s a table I made up listing some combinations that have worked well in my planting beds according to preferred temperature (cool or warm) and time needed until harvest (short, medium, or long season). That’s for here in New York’s Hudson Valley, with a growing season of about 170 days.
Examples of planting combinations
For example, looking at the first group, a tomato bed could start with lettuce, which will be out of the way by the time tomato transplants have spread to need the space. An example from the second group would be a bed with an early planting of turnips followed by a planting of okra followed by a planting of spinach.

A big advantage of these mixed plantings is that they present less of a visual or olfactory target for pests to hone in on, and they cover the ground enough to shade it to limit weed growth.

Lettuce and cucumbers

Lettuce and cucumbers

Carrots and lettuce following early corn

Carrots and lettuce following early corn

And Finally, the Twilight Zone, But Not For Now

Is it possible to find yet another dimension in the vegetable garden, a dimension beyond space and time? The Twilight Zone. Sort of. This fifth dimension is made up of a few tricks designed to find time where it is not, tricks meant to add days or weeks to the beginning and/or end of the growing season. But mid-July isn’t the time to detail ways of adding this dimension.

Trying to fill every available niche of physical space and time in the vegetable garden is like doing a four- (or is it five-?) dimensional jigsaw puzzle. Assembling this puzzle can sometimes bring on as much frustration as doing a real jigsaw puzzle. When I began gardening, I would sometimes get overwrought trying to integrate every multidimensional “puzzle” piece into every square inch of garden. Then I learned: When in doubt, just go ahead and plant.

BERRIES & ASPARAGUS REDUX

Berry Enticing

Berries are making it harder to get things done around here. Not because they are so much trouble to grow, but because I’ve planted them here, there, and everywhere. Wherever I walk I seem to come upon a berry bush. Who can resist stopping to graze? This year is a particular bountiful year for berries.

I can’t even walk to my mailbox without being confronted. First, there are lowbush blueberries hanging ripe for the picking over the stone wall bordering the path from the front door. Lowbush blueberries along pathThe wall supports the bed of them planted along with lingonberries, mountain laurels, and rhododendrons. These plants are grouped together because they are in the Heath Family, Ericaceae, all of which demand similar and rather unique soil conditions. That is, high acidity (pH 4 to 5.5), consistent moisture, good aeration, low fertility, and an abundance of soil organic matter. The small blueberries send me back to many summers ago in Maine when a very young me hiked in the White Mountains and picked these berries from plants growing amongst sun-drenched boulders. Care needed: mulching in autumn, and cutting a portion of the planting to the ground with a hedge trimmer every second or third winter.

A few feet further the path ends and I come to the driveway, and here’s a 50 foot long hedge of Nanking cherries (berry size, but a drupe fruit, not a berry), whose season is almost over. For the past few weeks the stems were so solidly clothed in cherries that you could hardly see the branches. The cherries have a very refreshing flavor on the spectrum between that of sweet and tart cherries. Care needed: winter pruning — very nonexacting — to keep the bushes from growing too large.
Nanking cherry fruits
Perhaps later, once back in the house, I’ve got to walk out the back door to the compost pile. Hmmm. Gooseberry plants are enticing me with their stems that are arching to the ground under their weight of berries. Can’t pick a little from just one plant. I’ve got to eat a few of each of the over dozen varieties. My favorites? Hinnonmaki Yellow, Poorman, Black Satin, Red Jacket, and Captivator. 

Poorman gooseberry

Poorman gooseberry

It’s a funny thing about gooseberries. If I pick a bowl of the berries and then bring them indoors to eat, they don’t taste as good as the one’s eaten bushside. It’s not just me; Edward Bunyard, in his 1929 book The Anatomy Of Dessert, wrote that the “Gooseberry is of course the fruit par excellence for ambulant consumption.”

Care needed: winter pruning to get rid of the very oldest stems and make way for younger ones; and to reduce the number of newest stems if they are overly abundant.

Okay, I finally made it to the compost pile. Now to check what’s going on in the greenhouse. Uh oh, I have to walk past black currants, one of my favorite fruits and now at their peak flavor. Their flavor is intense, intensely delicious to me. I grow mostly the variety Belaruskaja, which has just the right amount of sweetness to balance its almost resin-y flavor. Care needed: annual winter lopping to the ground of all two-year-old and some one-year-old stems.
Belaruskaja black currants
And right next to the black currants are black raspberries, also now at their peak flavor. The heavy crop of berries are arching some of the longest stems within reach of our ducks. I can share a few berries with them. Black raspberries grow wild all over the place in much of this part of the country. Wild ones are good. I prefer the named variety, Niwot, that I planted because it is one of two varieties that can bear two crops each season. For fruit size, flavor, and abundance, it’s worth growing even for just its summer crop. Care needed: summer pinching of tips of new stems to induce branching; winter pruning to cut away all two-year-old stems and thin out one-year-old stems, and to shorten branches to 18 inches; and tying stems to posts to hold them up.
Black raspberry fruit
Finally, I make it to the greenhouse. Leaving it, I’m confronted with two mulberry trees, the variety Illinois Everbearing and the variety Oscar (what a funny name for a fruit tree). No danger of the mulberries delaying my progress because I know that the birds are taking all of them. Illinois Everbearing, true to its name, will continue to bear into August. Perhaps by then the birds will tire of them or move on to other fruits, leaving some for me.

One more enticement, one of the best, before going back indoors — Fallgold raspberry. Fallgold raspberryThis variety, carrying genes of some species of Asian raspberry, has a sweet, delicate flavor unlike any other variety. Physically, the berries are similarly sweet and delicate, a pale, pinkish yellow. Their fragility makes them a poor commercial fruit so you won’t see them for sale. Grow them.

Asparagus Cutting?

Seems like last week’s blog post about my method for reducing weeds in the asparagus patch caused a lot of confusion. I wrote that I cut down all the spears before applying compost and wood chips, and many people thought that was not supposed to be done until autumn.

During the harvest season, which here is from the time the spears first show until the end of June, the spears are constantly being cut down for eating. All are regularly cut, even those too spindly for eating. Doing so helps starve out asparagus beetles, which are gone by July.

So consider my final, early July lopping back of any and all spears just like a final harvest. From then on, spears are left grow to their heart’s content, fueling the roots for next year’s spring and early summer harvest. The bed gets its final cutting down in autumn, when the ferns yellow to indicate that they’re no longer feeding the roots.
Asparagus growing through mulch
I was a little nervous about the compost plus wood chip smothering asparagus plants in addition to weeds. Not to worry. It’s a few days after the treatment and some fronds are already a few feet high. And so far, no weeds.

More details about growing and use of berry (and other) fruit plants can be found in my books Grow Fruit Naturally and Landscaping with Fruit.

“SPARROWGRASS” RENOVATION

The Season Ends

Asparagus season has ended here now, after more than two months of harvest. From now till they yellow in autumn, the green fronds will gather sunlight which, along with nutrients and water, will pack away energy into the roots, energy that will fuel next year’s harvest.
Weeding asparagus in past years
In addition to dealing with the weather, the plants have to contend with weeds. I have to admit, despite being the author of the book Weedless Gardening, that my asparagus bed each year is overrun with weeds, mostly two species(!) of oxalis, creeping Charlie, and various grasses. Also weeds parading as asparagus, self-sown plants. This, even though I planted all male varieties. Any batch of male plants typically has a certain, low percentage of female plants. (Still, my garden is weed-less even if it’s not weedless.)

I always wondered about the recommendation to plant asparagus crowns in deep trenches that are gradually filled in with soil as the new plants grow. I read that one reason is that crowns deep in the soil results in thicker, albeit fewer and later, spears. But as if to decide for themselves, research also shows that , over time, shallowly planted crowns naturally settle deeper into the ground, and deeply planted crowns inch upwards.
Weedy asparagus bed
Another reason for deep planting is, perhaps, to protect the crown from tiller blades or hoes. I don’t till and, since the plants anyway take the matters in their own hands, I set my asparagus, years ago when I planted them, just deep enough to get the crowns under the ground.

Weed Control(?) for Next Year

But back to the weeds in my asparagus bed . . .  This year I’m determined to get more of the upper hand with weeds. To whit: Yesterday I cut everything — weeds and asparagus — in the bed as low as possible. A bush scythe, which is a scythe with a short, heavy duty blade, does this job easily and quickly; a weed whacker might also work. One year a battery powered hedge trimmer got the job done. For me, the scythe works best.

In years past, I would cut everything to the ground, as I did this year, and then I’d top the bed with a couple of inches of wood chips.

This year, to get better weed-less-ness and to offer the asparagus plants a treat as thanks for the many spears that went into cold soup, hot vegetable dishes, and the freezer, I offered them compost. Although I make lots of compost, that compost is generally reserved for beds within the vegetable garden proper and potting mixes as well as, this year, my newly planted grape vines, and pear and apple trees.
Asparagus bed with compost
Asparagus is worth it, so I dug into my most finished compost bin, filled up two garden carts, and slathered a one-inch layer of compost over the whole bed. That inch of dense, dark compost should go a long way to smothering small weeds, which have little reserve energy. The compost then got topped with a couple of inches  of wood chips. Asparagus bed with compost and chipsThe compost will nourish the asparagus . . . and the weeds, most of which I hope will be sufficiently young or weakened to not push up through the compost and the wood chips to light.

Compost Needed

That was a lot of compost to part with. No problem, because I’ve also been making lots of compost. Plus, a few bins I built last year, each with about one-and-half cubic yards of compost, are ready to use or will be so in the coming weeks.

The bins themselves are made from 1×6 boards of composite wood (a mixture of waste wood, recycled and new plastic, and some type of binding agent), such as used for decking, notched to stack together Lincoln-log style. It keeps moisture and heat in, and scavengers and weeds more or less out, and doesn’t degrade, as did my previous wood bins.

I feed my compost pets — earthworms, fungi, bacteria, and other organisms — hay from my small field, manure from a nearby horse farm, kitchen waste, old garden plants, and anything else biodegradable. The latter category has included old leather shoes and garden gloves, jeans, and, as an experiment, biodegradable(?) plastic spoons.

The compost also gets occasional sprinklings of soil, to add bulk, and ground limestone. Periodic liming is generally needed to counteract the acidity of most soils of northeastern U.S.; my soil gets limed indirectly, via the compost.
Feeding compost
Water is commonly the most limiting ingredient in home composts. Lots of water is necessary to percolate down into a pile. Rather than getting bored with a hose wand, after finishing an extended composting session, I set up a small sprinkler on the pile, whose spread is as wide as the pile, to gently water for about 20 minutes.

Of course, the devil is in the details: how much of each ingredient to add. Not to worry, though. Any pile of organic materials will eventually turn to compost.

For my piles, I check moisture with a REOTEMP long stem moisture meter and monitor progress with a long stem compost thermometer. This time of year temperatures of the piles soar to 150°F within a few days.

My asparagus bed is worth all this.

GOOD BERRIES, BAD(?) BERRIES

Sad, Then Happy

A sad day here on the farmden: the end of blueberry season. Frozen blueberries, that is. Seventy quarts went into the freezer last summer, and a lot more than that into bellies, and now they’re all finished.

A happy day here on the farmden: the first of this season’s blueberries are ripening. These blueberries, and those that were in the freezer, are the large “highbush” (Vaccinium corymbosum) varieties commonly found fresh on market shelves. Also ripening now are “lowbush” (V. angustifolium) blueberries, growing as a decorative, edible ground cover on the east-facing slope near my home.
Blueberries ripening
I’ve said it before but I’ll say it again. After many, many years of growing fruits in my not-particularly-good-for-fruit-growing site, blueberries — a native fruit — have always yielded well. Two most important things are adapting the soil to blueberries’ unique requirements, and keeping birds at bay. Birds at bay? Best is a walk-in, netted area.
Blueberry, netted
Soil for blueberries needs to be very acidic, with a pH between 4 and 5.5, made so, if needed, with the addition of sulfur, a naturally mined mineral. The pelletized form is best because it’s not dusty. Blueberry roots need good drainage and consistent moisture. They thrive in ground rich in organic matter, maintained with an annual three-inch topping of some weed-free, organic material such as wood shavings, wood chips, straw, pine needles, and autumn leaves.

(That’s the bare bones for success with blueberries. For a deeper dive into growing this healthful, delicious, reliable fruit, stay tuned for my soon-to-be-aired blueberry webinar.)

And More Berry-Like Fruits Coming Along

Just as last year’s apples were losing their crispness and tang and I needed a change from oranges, other berries, in addition to blueberries have started changing color, softening, and turning flavorful.

Black currants are another one of my favorites now ripening. They admittedly have an intense flavor not to everyone’s liking. But everyone likes black currants conjured up into juices, pastries, or jam. Variety matters. My favorites are Belaruskaja, Minaj Smyrev, and Titania. 
Belaruskaja black currants
Don’t think black currants taste anything like “dried” or “Zante” currants. Those are raisins, originally made from “Black Corinth” grapes, a name then bastardized to “black currant.”

Like blueberries, black currants are easy to grow. But they have no special soil requirements, they fruit well even in some shade, and deer rarely eat the bushes, and birds rarely eat the berries.

Another tasty morsel now ripe is gumi (Elaeagnus multiflora). Birds usually strip this shrub clean of fruit, except this year the crop is so abundant that neither I nor the birds can make much of a dent in it. The berries are a little astringent if not dead ripe. And not at all if the fruit is processed; last year I cooked them slightly, strained out the seeds (which are edible), and blended it before drying it into a “leather.”
Gumi fruit
The gumi shrub itself has silver leaves, providing an attractive backdrop for the red fruits. The flowers are extremely fragrant, and the roots enrich the soil by taking nitrogen from the air (with the help of an actinomycete microorganism.)

Also now abundant, with plenty for all, is Nanking cherry (Prunus tomentosa), a favorite of mine for beauty and easy-to-grow cherries. The cherries are small, usually no larger than about 3/8 inch. But the single pit is also small. Flavor lies somewhere on the spectrum between sweet and sour cherries, very refreshing especially when chilled.

Nanking cherry fruit and bloom

Nanking cherry fruit and bloom

Another Chance, and Then Another

All is not rosy in the berry-size fruit world. Over the years, I had heard about and tried a new fruit in town, edible honeysuckles. In the past, the plants I tried either died over winter or bore very few, very mediocre berries. Since then, edible honeysuckles have come up in the world, with serious breeding work, and I was given the opportunity to try them again. (As Maria Schinz said, “Gardening is an exercise in optimism.”)

But first, what is an edible honeysuckle, which now goes under better names. If called “honeyberry,” it usually refers to Russian species such as Lonicera caerulea app. kamtshatica or edulis. Haskap is a Japanese name applied the Japanese species L. caerulea spp. emphylocalyx, or to hybrids of this species with Russian species. Pure Japanese species varieties are sometimes called Yezberry, after the Island of Hokkaido, called Yez or Yezo Island where they are found. The Japanese species and hybrids are less susceptible to spring frosts than the honeyberries.

This spring I planted out two Yezberry varieties, Solo and Sugar Mountain Blue. The small, blue berries ripen early, and I was eager to give this fruit another try. Solo is bearing. The taste? Awful! Sour, with no other flavor.

Solo yezberry

Solo yezberry

But I’m not abandoning edible honeysuckles. I’ve learned that the berries need to hang on the branches for a long time before developing full flavor and sweetness. A number of varieties are available, some of which are, according to others, “Delicious when eaten fresh from the plant” and “a bit like a cross between a raspberry and a blueberry. . . sweetness of a raspberry with a hint of pleasant tartness.” Really?!

Many blue berries are still hanging on my Solo bush. I’ll leave them to hang longer there and perhaps morph from “awful” to “delicious,” and will report back. I have hope for this new fruit, not yet high hopes.

At the very least, honeyberries or haskaps might be able to tide me over from the end of frozen blueberries to the first of fresh blueberries.

BAD SEEDS? NO SEEDS?

Edamame Scare

Got a couple of scares in the garden this season. No, not some woodchuck making its way past the dogs and then through some openings in the fences to chomp down a row of peas (which look especially vibrant this year, thank you). And no late frost that wiped out my carefully tended tomato transplants. 

The first scare came last week as I looked down on the bed where I had planted edamame a couple of weeks previously. No green showed in the bed, a stark contrast to the nearby bed planted at the same time with snap beans, the small plants enjoying the warm sunshine and neatly lined up four inches apart in two rows down the bed.

Testing edamame seeds

Testing edamame seeds

Scratching gingerly into the soil of the edamame bed did not reveal any seeds germinating but not yet above ground. In fact, I couldn’t find any seeds at all! Had I opened furrows and forgotten to plant seeds in them before covering the furrow? Doubtful, especially since I had planted another bed, still barren, in the other vegetable garden at the same time. Had a mouse or some other animal cruised underground enjoying a snack every four inches down the row? That would be a very thorough rodent. Plus, he or she would have left a tunnel.

Had the seeds rotted? Possibly, but that would be very quick for them to so thoroughly disappear. Had the seeds been old, which would make them more prone to rotting? I do save my own edamame seed every year, the variety Shirofumi, so that is a possibility. Except that I planted last year’s seed.

The mystery still exists but there was still time for action. I had additional Shirofumi seed left. Rather than just plant it, I’d test its germination, which I did by sprouting the seeds indoors. After an overnight soak in a beaker, I poured off the water and then rinsed the seeds twice daily. As it turned out seed from 2018 and 2015 didn’t germinate at all.

Last year’s seed germinated very well, and I planted them while their root sprouts were still very short. One week later, the plants have emerged. But the mystery still exists.Planting sprouted edamame

What If?

The second scare of the season is seed-related but hypothetical. What if seeds are unavailable next year, or any year? Or, at least, seeds of some of the varieties I want to grow.

This fear is not all that hypothetical. This spring, because of the surge in interest in gardening, seeds were harder to get.

And in years past, seeds of some of my favorite varieties of vegetables became difficult to find. Sweet Italia pepper, for instance, which I consider the best as far as flavor and early ripening for colder climates. My recourse has been to save my own seeds of these varieties for many years. In addition to Sweet Italia, I also save seed of Pink Pearl and Pennsylvania Dutch Butter popcorn, Otto File polenta corn, and, as mentioned above, Shirofumi edemame.

Sweet Italia pepperPopcorn hanging from kitchen rafters

This season, the plan is to save seed of more vegetables.

A few guidelines will make seed-saving a success. First, I won’t save seed from “F-1 hybrids;” they are produced with selected, different parents, so the saved seed will not yield the same variety as the seed that is saved.

Selecting seeds from too few individuals can result in inbreeding depression, or generally weaker plants. So my second guideline is to save a few seeds from a lot of plants, then combine them to put more genetic diversity into the seed packet packet. Saving seed from more than one plant also provides insurance just in case a seed plant dies.

Some vegetable plants — corn, onions, and the cabbage family, for example — are especially prone to inbreeding depression. Saving seeds from Otto File and my popcorns is especially easy since the seeds are dry and mature when ready to eat or save. When I twist the kernels off an ear for eating, I just take out a few to add to my growing seed packet of that particular variety.

Arugula (Cabbage family) flower and seedpod

Arugula (Cabbage family) flower and seedpod

A third consideration in saving seed is keeping the seed true to variety. Varieties of sweet corn readily cross-pollinate. Again, it is corn, onions, and the cabbage family that are among the common vegetables that readily cross pollinate. So I grow popcorn in one vegetable garden and sweet corn in the other, and Otto File corn out in my meadow between dwarf apple trees. If my Golden Bantam sweet corn were to grow too close to my Pink Pearl Popcorn, the resulting seeds will grow into plants yielding kernels that were less sweet or less poppable. 

Although squashes have separate female and male flowers on the same plant, which would make them prone to cross-pollination, that’s no problem here. Zucchini flower and fruitI grow only Sweet Mama and Waltham winter squashes. The first variety is botanically Cucumbita maxima and the second is C. moschata; the two species do not cross-pollinate.

Plants that can self-pollinate, such as tomatoes, peppers, beans, and peas, could be contaminated by pollen from other, nearby varieties. Tomato flowerDistance between varieties can prevent cross-pollination. So can fine mesh bags. I plan to use small organza bags normally sold for wedding favors.

And finally, good storage, meaning dry and cool or cold conditions, makes sure seeds germinate well. Which my edamame did not. Hmmm.

(For more depth in seed saving, see the excellent and thorough book Seed to Seed: Seed Saving and Growing Techniques for Vegetable Gardeners by Suzanne Ashworth.)

ALL FOR THE FUTURE

Seeding Transplants? Again.

Only a couple of weeks ago I finished planting out tomato, pepper, melon, and the last of other spring transplants, and here I am today, sowing seeds again for more transplants. No, that first batch of transplants weren’t snuffed out from the last, late frost when the thermometer dropped to 28°F on May 13th.

Sowing lettuce seeds in flats
And no, those transplants were not clipped off at ground level, toppled and left lying on the ground, by cutworms. Neither were they chomped from the top down to ground level by rabbits.

I’m planting seed flats today to keep the harvest rolling along right through late autumn.

Future Further

Looking farthest ahead, I have in hand two packets of cabbage seed, Early Jersey Wakefield and  Bartolo. Early Jersey Wakefield is a hundred year old variety with very good flavor and pointy heads, due to mature a couple of months after transplanting. Once those heads firm up, they can keep well out in the garden for a few weeks in the cool, autumn weather. Those I set out in spring, once mature, are apt burst open from rapid growth in summer weather. Bartolo yields firm, round heads that store in good condition after harvest, well into winter. They are ready for harvest 115 days after transplanting.
Cabbages and kale interplanted in bed
I plan for any of today’s sowings to spend about a month in their containers before being planted out. Cooler weather and lowering sunlight dramatically slow plant growth around here by early October, so any late ripening vegetables need to be ready or just about ready for harvest by then. Bartolo cabbage, with 30 days in a seed flat plus 115 days out in the garden, is then ripe by . . . whoops . . . the END of October! No wonder Bartolo often didn’t ripen for me in the past. (Nothing like writing about my garden to keep me honest and awake. I should re-read the detailed timing schedule I wrote in Weedless Gardening for various vegetables in various climates.)

Okay, all is not lost for winter storage cabbage. Warm weather, timely water from drip irrigation, and soil enriched with plenty of compost might speed maturity along faster than predicted. Unseasonally warm weather through October would also help ripen nearly ripe heads. And there’s always the fallback, with sure-to-ripen Early Jersey Wakefield.

Still on time, guaranteed, will be today’s sowing of Charming Snow cauliflower, maturing 60 days from transplanting.

That’s it, for now, for the cabbage family. Later on in summer I’ll be sowing Chinese cabbage seeds. Perhaps more kale also, although spring sowings of this almost perfect vegetable can carry on right into winter, even spring if the winter is sufficiently mild.

Future Sooner

For sooner use in the coming weeks will be today’s sowings of lettuce, cucumber, and summer squash. I like lettuce but lettuce doesn’t like hot weather and longs days. Those conditions cause leaves to turn bitter as plants send up flower stalks and go to seed. But if I sow a pinch of seeds in flats every couple of weeks, the transplanted lettuce can usually be harvested small, before it’s socked away enough energy and wherewithal to go to seed.

The cucumber transplants I’ll want on hand to replace cucumber plants that I set out a couple of weeks ago. After a few weeks those spring plantings invariably succumb to powdery mildew and cucumber beetles, which not only feed on the plants but also spread bacterial wilt disease. (Easy identification for bacterial wilt, besides a wilting plant, is the thread of bacterial ooze visible as you pull apart a cut stem.)
Cucumber seedlings
Summer squash plants also peter out during summer, mostly from, again, powdery mildew, and also from squash bugs and vine borers. If squash vines are covered with soil along their stems, roots will form at the nodes, and the plant will continue production. I’ve got to be careful in saving the older squash plants, though; it’s too easy to  have too much of this vegetable.
Squash vine borer damage

Memorial Day, Before, During, and After It

Here in the States, the traditional time to plant a vegetable garden, is for some reason, Memorial Day weekend. But that can’t be true from Oregon to Florida and from Maine to Arizona, with our wide variations in climate!

I did put tomatoes, peppers, and plenty of transplants in the ground here during Memorial Day weekend. But I already had sown seeds or transplants of peas, arugula, lettuce, kale, carrots, celeriac before that weekend. And, as I’ve written above, there’s plenty of planting to be done after that date. Memorial Day weekend is not a seminal date in my gardening calendar.

STIRRING MY BLOOD, CLEARING (PARTS OF) THE MEADOW

Nearing Influence

What struck me most about Scott Nearing was his sturdy appearance, arms hanging loosely from broad shoulders, his near perfect teeth, and the deeply creviced wrinkles of his face. He was 91 years old. Looks aside, his influence on me was deep despite the brevity of my visit.Scott NearingScott Nearing was a professor of economics, a political activist, a pacifist, a vegetarian and an advocate of simple living. And a gardener. For many of these reasons, he was almost a cult figure back in the 1970s when I, a young man, visited him. He was then known mostly for his book Living the Good Life. I had read the book, and decided to drive 1,000 miles from Madison, Wisconsin to show up on his farm, unannounced, in Harborside, Maine.

I thought of that visit today as I was swinging my scythe. Would I have been out in the field this morning doing so if I hadn’t made that visit? Scott was a big fan of scything, about which, he wrote, “It’s a first class, fresh-air exercise, that stirs the blood and flexes the muscles, while it clears the meadows.” Lee scythingFor me, working my field in the quiet of early morning, with the sun low in the sky and grasses still moist from morning dew, is sheer pleasure. A morning dance.

From a practical standpoint, no need to worry about waking neighbors with noise of a mower engine, or to worry about getting a mower bogged down in wet spots.

Keeping the Magic

I’ve swung a scythe for many decades. (Not that that makes me an expert in its use; for the first couple of decades I did it wrong. Now, more right.) Two considerations have kept the magic alive.

First, not too much. When I first acquired the acre and a half field to my south, I aimed to keep it a meadow, stemming invasion from woody plants in a natural transition to forest by scything the whole field. Considering the lushness of the vegetation, and how rapidly it grew back, that was a bold undertaking. The result: Something short of sheer pleasure, and tennis elbow.

Salvation came in the form of a small, farm tractor and a brush hog, with which I now mow the bulk of the field once a year.

There’s still plenty to scythe, including areas near my fruit and nut trees, and areas too wet for the tractor. I also scythe selected areas of the field proper, changing yearly to allow scythed sections, whose mowings I gather up, to regenerate. Also important: I limit daily scything to no more than a half hour.
Meadow and cart full of hay
The second consideration is to use the right kind of scythe. The so-called American type scythe, with a curved handle and stamped blade, is put to best use decorating the wall of a barn. I use a so-called Austrian type scythe (purchased from www.scythesupply.com), which usually has a straight handle and is lightweight with a razor sharp, hammered-thin blade. The blade needs periodic hammering (peening) for keeping its taper or for repair, and daily dressing with a whetstone.scything, beginning stroke

Blade length is important. Back when I was working the whole field, the job was made harder because of the 36 inch long blade I was using. Sure, you can cut more with a longer blade, but that was too much lush vegetation to plow through in one swing. Nowadays a 22 inch blade strikes a nice balance, not biting off more than I can “chew.”

No Big Field, No Problem

No need for access to a large field to experience the physical and practical pleasures of scything. For many years, my field was only a portion of my original three-quarter acre property. And no matter how large or small the field, no reason to do as Scott did, to “clear the meadow.” On my small property, I practiced what I called Lawn Nouveau, created, as I detail in my book,  The Pruning Book, by sculpting out two tiers of grassy growth. The low grass is maintained just like any other lawn, and kept that way with a lawnmower.

The taller portions need to be scythed but once a year, or more frequently if desired. Raking up mowings from the tall grass portions avoids unsightly clumps or smothering of regrowth. The rakings are good material for mulch or compost. A crisp boundary between tall and low grass keeps everything neat and avoids the appearance of an unmown lawn.
Lawn Nouveau
Lawn Nouveau saves me time because the tall grass needs infrequent mowing and there’s no rush to get it done. The tall grass becomes more than just grass as other plant species elbow their way in. Which ones gain foothold depend on the weather, the soil, and frequency of mowing. An attractive mix of Queen Anne’s lace, goldenrod, chicory, and red clover might mingle with the grasses in a dry, sunny area, with ferns, sedges, and buttercups mixing with the grasses in a wetter portion.

Curves at the interface of high and low grass present bold sweeps to carry you along, then pull you forward and push you backward, as you look upon them. Avenues of low grass cut into the tall grass invite exploration — that was the purpose of today’s scything. Thank you Scott.
Meadow with path

HOT KNOWLEDGE

Between a Rock and a Hard Place

More knowledge makes for a better gardener. That’s what I had in mind with my most recent book, The Ever Curious Gardener, excerpted here:

With hot weather here today, and soon to be a regular occurance, I pity my plants. While I can jump into some cool water, sit in front of a fan, or at least duck into the shade, my plants are tethered in place no matter what the weather. And don’t think that plants enjoy searing sunlight. High temperatures cause plants to dry out and consume stored energy faster than it can be replenished. Stress begins at about 86 degrees Fahrenheit, with leaves beginning to cook at about 20 degrees above that.
Watering with hose
One recourse plants have in hot weather is to cool themselves by transpiring water. Transpiration, which is the loss of water from leaves, can cool a plant by about 5 degrees Fahrenheit. Over ninety percent of the water taken up by plants runs right through them, up into the air, exiting through little holes in the leaves, called stomates. Carbon dioxide and oxygen, the gases plants need to carry on photosynthesis, also pass in and out through the stomates.

All this is fine provided there is enough water in the ground. If not, stomates close, transpiration and photosynthesis stop, and the plant warms. Even if the soil is moist, stomates might close in midsummer around midday if leaves begin to jettison water faster than the roots can drink it in. This situation puts most plants in a bind. Should they open their pores so that photosynthesis can carry on to give them energy, but risk drying out, or should they close up their pores to conserve water, but suffer lack of energy?

CAM at work

Enter cacti and other succulents (all cacti are succulents—that is, plants with especially fleshy leaves or stems—but not all succulents are cacti): their fleshy stems and leaves can store water for long periods. After more than a year without a drop of water, my aloe plant’s leaves still look plump and happy.

Besides being able to store water in their stems and leaves, jade plants, aloes, cacti, purslane, and other succulents have another special trick, Crassulacean Acid Metabolism, for getting out of this conundrum.

Aloe plant

Aloe plant, more than a year without water!

They work the night shift, opening their pores only in darkness, when little water is lost, and latching onto carbon dioxide at night by incorporating it into malic acid, which is stored until the next day. Come daylight, the pores close up, conserving water, and the malic acid splits apart to release carbon dioxide within the plant, to be used, with sunlight, to make energy.

I’ve actually tasted the result of this trick in summer by nibbling a leaf of purslane—a common weed, sometimes cultivated—at night and then another one in the afternoon.
Purslane
Malic acid makes the night-harvested purslane more tart than the one harvested in daylight. Try it.

No CAM? How ‘Bout C4?

Another group of plants, called C4 plants, function efficiently at temperatures that have most other plants gasping for air and water. C4 plants capture carbon dioxide in malate, the ionic form of malic acid, which is a four-carbon molecule, rather than the three-carbon molecule by which most plants—which are “C3”—latch onto carbon.

The enzyme that drives the C4 reaction is so efficient that C4 plants do not have to keep their stomates open as much as do C3 plants. The C4 pathway also does its best work at temperatures that would eventually kill a C3 plant, and cells involved in the various steps are partitioned within the leaf for greatest efficiency.

C4 plants are indigenous to parched climates, but not uncommon visitors in our gardens. Corn is a C4 plant. (Cool climate grains such as wheat, rye, and oats, are C3 plants.)
Tall corn plant
Looking at my lawn, I see another C4 plant. Hot, dry weather in August drives Kentucky bluegrass, a C3 grass, into dormancy. Not so for crabgrass, a C4 plant, which remains happily green.

I also find some other C4 plants, in addition to corn, in my garden. As many vegetables and flowers flag, all of a sudden lambsquarters and pigweed, both C4 weeds (or vegetables, for those who like to eat them), appear as lush as spinach in spring.

Gardener’s Assistance

Can I do anything to help out my plants in hot weather? Keeping the garden watered helps. (Ways to apply water and how much is needed are all-important, and topics unto themselves.)

Sprinkling or misting plants could keep them cool without their having to pull water up from the soil. But the thirty gallons of water that runs up through a tomato plant in a season, or the fifty gallons that flows through a corn plant, is for more than just cooling these plants. It also carries dissolved minerals from the soil into the plant. So it’s debatable how well a plant would grow with too much misting. And besides, wet plants are predisposed to disease.

A better alternative to sprinkling plants is to grow plants adapted to the climate and the season. My lettuce, spinach, peas, and radishes are doing fine now; despite today’s heat, it’s not really all that hot — yet. And nights are still cool. Mostly, I avoid growing these cool weather plants in summer. Except that I like my lettuce salads, so I extend its season by growing it in the shade beneath trellised cucumbers.
Lettuce & trellised cukes}
Fortunately, tomatoes, cucumbers, peppers, melons, and squashes, although they are neither cacti nor C4 plants, can take quite a bit of heat. They have very deep roots.

LIBERATED, AT LAST

Exposée

My garden was liberated yesterday, the soil freed at last. That’s when I peeled back and folded up the black tarps that had been covering some of the vegetable beds since early April. My beautiful soil finally popped into view.
Folding up tart
Covering the ground was for the garden’s own good. “Tarping,” as this technique is called, gets the growing season off to a weed-less start. The black cover warms the ground to awaken weed seeds. They sprout, then die as they use up their energy reserves which, without light, can’t be replenished and built up. (I first learned of this technique in J. M. Fortier’s book The Market Gardener.)

Tarping is very different from the much more common way of growing plants in holes in black plastic film, even if one purpose of the soil covering, in both cases, is to snuff out weeds. Black plastic film is left in place all season long, and then disposed of, usually in a landfill, at season’s end.

Tarping tarps might be silage cover material or — as in my case — recycled, vinyl billboard signs (black on one side). They are left in place for relatively short duration, after which time the ground can be exposed to natural rainfall and air, and is open for blanketing with compost and cover crops. After each use, tarps can be folded up and stored for re-use for many seasons more.

Prescription for Weed-lessness

Tarping is but one part of my multi-pronged approach to weed control, the others of which I detail in my book Weedless Gardening. 

My garden is also weed-less because I never, and I do mean never, till the soil, whether with a rototiller, garden fork, or shovel. Preserving the natural horizonation of the soil keeps weed seeds, which are coaxed awake by exposure to light, buried within the ground and dormant. No-till also has side benefits: preserving soil organic matter, maintaining soil capillarity for more efficient water use, and not disrupting soil fungi and other creatures.

Tilling does loosen the soil structure, but I avoid soil compaction by planting everything in 3-foot-wide beds, saving the paths between the beds for foot traffic.
Garden beds
Weed-lessness is also the result of each year covering the ground with a thin layer of a more or less weed-free mulch, just half inch to an inch thick depth. This covering snuffs out small weed seeds that might be present. Other benefits are insulating to modulate wide swings in soil temperature and softening the impact of raindrops so that water percolates into the ground rather than running off. 

What I use for this thin layer of mulch depends on what’s available, what I’m mulching, and, sometimes, appearance. Vegetables are hungry plants so their beds get an inch depth of ripe compost, which, besides the other benefits of mulches, also provides all the nutrition the vegetable plants need for a whole season. Paths get wood chips; it’s free, it’s pretty, and it visually sets off paths from beds. Straw, autumn leaves, sawdust, and wood shavings are some other materials that would work as well.

At the end of the season, beds that have been harvested but aren’t needed for autumn cropping, get a cover crop, which is a plant grown specifically for soil improvement.
Autumn cover crop
Cover crops provide all the benefits of mulches, plus looking pretty, sucking up nutrients that might otherwise wash through the soil in winter, and growing miles and miles of roots to give the soil a nice, crumbly structure. I plant oats or barley, because the plants thrive in cool autumn weather and then, here in Zone 5, are killed by winter cold sometime in January. The leaves flop down, dead, to become mulch, which I rake or roll up easily before it’s time for spring planting.Raking up oat cover cropClearing oat cover crop by hand

Another ploy for weed-lessness is using drip irrigation. Sure, I could get by without any watering here in the “humid Northeast,” but timely watering gets the most out of the garden. Drip irrigation pinpoints watering to garden plants rather weeds, which would, with a sprinkler, be coaxed to grow, for instance, in paths.

Weed-less but Not Weed-free

With this multi-pronged approach to weed-lessness, isn’t tarping like “taking coals to Newcastle?” No. I found that even after not tilling, mulching, using drip irrigation, and, especially, cover cropping, some weeds do a figurative “end run”and find their way into some beds. Especially, the last few years, red dead-nettle (Lamium purpureum). Purple deadnettleYes, I know the plant is pretty, provides early nectar for pollinators, and is edible. But its out of place in my vegetable beds. The tarp does it in.

No garden can be weedless. But mine has been weed-less for many, many years.

PERENNIAL VEGETABLES

Hablitzia: What a Name!

At last night’s appropriately social distanced “zoom” dinner with my daughter, she commented on how tasty my salad looked. “All home grown,” I replied, and held up to the computer screen a leaf of one of the major contributors to my bowl of greenery, Caucasian mountain spinach (Hablitzia tamnoides). “Looks like some leaf you just plucked off a tree,” says she. Yes, it did, but it was as tasty and as tender as any leaf of regular garden spinach.
 Caucasian mountain spinatch
It’s with good reason that the two “spinaches” are so similar: They’re both in the same family, Amaranthacea, also kin to beets, chard, quinoa, lamb’s quarters, and pigweed.

Caucasian mountain spinach has it over conventional garden spinach in a number of ways, most significantly its being a perennial. I planted it last spring and don’t plan on doing so ever again. Not that making new plants would be difficult. They were easy from seed, and cuttings are also said to root easily. The quickest way to have larger new plants would be to divide the clump sometime after the tops have died back for winter or before new sprouts appear.

Being a perennial, Caucasian mountain spinach won’t lose quality as it goes to seed during the warmer, longer days of late spring and summer. White flowers, with a faint aroma of cilantro, appear in June and July, but the leaves still make tasty additions to salads or cooked dishes.

Right now, plants are starting to stretch their leafy stems skyward. Making use of the third dimension in gardening — up — makes for efficient use of garden space, a plus for any plant in an intensive garden. They’d like something on which to climb, which they do by pulling themselves upward in the same way as do clematis vines, twisting their leaf stalks around whatever they can. I’ll be providing a ladder for them made from posts and chicken wire.

Now that I think of it, Caucasian mountain spinach also makes use of the fourth dimension in gardening — time — since it can make its way into the kitchen from when my plum trees bloom until I harvest the last of my apples.

The Good King, and Others

The bed that’s home to Caucasian mountain spinach is also home to another perennial bit of edible greenery, Good King Henry (Blitum bonus-henricus), also sharing the Amaranthacea family. That bed gets some shade in the afternoon, which is all to the liking of Caucasian mountain spinach, not so much to Good King Henry.
Good King Henry
No matter, because Good King Henry is not, in my opinion, nearly as tasty as its Caucasian cousin. The King’s leaves are good cooked, but not great, and not very good raw in salads. One reason I like it so much is for its name, both the common name and the botanical name.

I had hoped the bed would also be home to the perennial leek and perennial onion (Welsh onion) that I sowed and grew last season. But there’s not a sign of either plant this season. I guess they’re not all that perennial, odd since last winter was downright tropical (for here), the thermometer hardly dipping below zero degrees Fahrenheit.

If I wanted early onions, as greens, some kinds are reliably hardy. An interesting one that I grew decades ago is Egyptian Onion, also known as Walking Onion. They “walk” because the cluster of small bulbs atop the green stalks weight the stalks down till they eventually bow to the ground, depositing the cluster a few inches from the plant. Egyptian onionThe bulbs take root, grow, bow, and deposit the bulbs another few inches away, so, unfettered, the plant spreads by “walking” around the garden. I stopped growing it because the flavor was too sharp for me.

One More, This One Well-Known

One more perennial vegetable, this one familiar to everyone, is asparagus. I don’t understand why anyone who has a garden doesn’t grow asparagus. Even a flower garden, to which asparagus can offer a soft, green ferny backdrop. A bed offers two months of almost daily harvest. Rabbits and deer don’t eat it, so fencing isn’t needed (except in my garden, where my dogs have developed a taste for it).
Asparagus spear
And pests are rarely a problem. Except for weeds.

Perhaps you’ve been put off by the heroic measures for planting it suggested in older gardening books. That is, digging a deep trench, planting the roots in the bottom of the trench, and then gradually filling it in as the plants grow. Not necessary!

The deep planting suggested was to keep the plants’ crowns beyond the reach of tractors’ cultivator blades. But there’s no reason to cultivate an asparagus bed, and most home gardeners don’t anyway, so make holes just deep and wide enough to cover the roots when planting.

So there you have it, for easy gardening and tasty meals: Plant Caucasian mountain spinach and asparagus, and perhaps, especially if you like the name, Good King Henry.