NUTS, SOME GOOD, SOME BAD, AND NEW(!) PLANTS

 

A Good Harvest, But . . .

The black walnut harvest was abundant this past fall. Back in October, we gathered about a dozen 5-gallon buckets of of unhusked nuts, and, after husking, cleaning and drying them, set them in the cool, dry, squirrel-proof loft of our garage/barn (gabarn?).

The nuts are now sufficiently cured and ready for cracking. Two tools have made quicker, easier, pain-free, and more effective the once difficult and thumb-threatening job needing a concrete floor and a hammer. The Master Nutcracker makes elegant use of cogs and levers. For any nutmeats still gripped in a piece of shell, a “diagonal cutting plier” nips the shell piece to create a fault line that opens to drop out a piece of nutmeat, or to twists off a piece not fully cracked.Black walnuts and Master Nutcracker

This year’s harvest was from two trees. Most was gathered from the ground beneath a decades-old tree. That tree grows on what, in spring, is periodically waterfront property when the swale that it borders fills with rushing water. The other tree sprouted in well-drained soil a few years ago at the edge of woods along the north edge of our property. Now with an 8-inch diameter trunk, it began yielding nuts in earnest only a few years ago.

The opening day of nut-cracking season has highlighted the difference in nuts. Nuts from the younger tree not only are significantly larger, but they’re all well-filled with nutmeats that come out in large pieces. The old tree has yielded too many nutmeats that are dark brown and shriveled, or totally dried out, black, shriveled, and inedible.Good nuts and shriveled nuts

Genetics could be at play. Although both trees are black walnuts, each is a distinct individual within the species. Water might also figure in. Periodic flooding in the spring might leave too many of the old tree’s roots gasping for air at critical moments in nut development. Perhaps the old tree is still recovering from being swamped in water a few feet up its trunk during hurricane Irene back in 2011.

Perhaps it’s age. Probably not. Black walnuts are long-lived trees and I assume their fecundity goes hand in hand with their longevity.

Up to a few years ago, the large, old tree bore regular and reliable nuts that were plump with nutmeats.

Winter Dreaming

You’d think, after gardening for so many years with sufficient room for planting, that I would have by now grown every plant I could possibly want. Not so!

Cleaning up my desk, I recently came across a pile of papers clipped together, my pile of “plants to grow.” Over the years, whenever I see a plant of interest in a magazine or newspaper, I’ve torn out the page to add to the collection. The same goes for plants I might come across on the web or in conversation.Plants to grow

Swelling over the years, the pile has become intimidating. Daring to look at it would force me to decide whether such and such still worth growing and, if so, where to plant it. If an ornamental plant, where to incorporate it harmoniously into the landscape? If an edible, where best to site it for convenience in care and harvest? And do I have time to care for yet another plant? If there’s a plant offering both good eating and good looks, how to . . . well, you get the picture.

Perhaps the approach should be the same that some guy with too large a collection of shoes or some gal with too large a collection of cars might take: Vow to get rid of one for each new one collected. Or not.

Now Really, What To Plant Next Year

Okay, I’ve segregated the pile of “plants to grow” into two piles, one for plants to order this coming spring, and one for plants to keep on the back burner.

At the top of my list are three daphnes. I already grow Carol Mackie (Daphne × burkwoodii) for its fragrance and white-picoteed leave; the new daphnes can share a bed with her. Briggs’ Moonlight (D. × burkwoodii) has the reverse leaves, white with a green-picotee — a nice foil for Carol Mackie. Joining them will be Summer Ice (D. x transatlantica), which has just a thin line of white on its leaf edges. Also February Daphne (D. x mezereum), this one for its rosy-purple flowers that open in early spring on leafless shoots. All these daphnes are attractive but their main draw, for me, is the flowers’ jasmine-like perfume. They will make sitting on the nearby deck an olfactory delight from early spring right through summer.

How can I resist a plant called roof iris (Iris tectorum), both for its flowers and low fountains of foliage? It tolerates cold or dry conditions, and grows in sun or shade, so would be a perfect addition in name, needs, and appearance for MY green roof.

Another perennial slated for entrance next year is royal catchfly (Silene regia), a native of American prairies with fire engine red flowers. My plan is to grow them from seed to get enough seedlings to  plant in part of MY meadow.

That’s all for the coming year. What, no fruits, one of my specialties? No, I have all I need. Hmmm . . . what about quince?

MY PONYTAIL GROWS, AND SEEDS ENTICE

I Grow A Ponytail

A friend gave me a ponytail palm (Beaucarnea recurvata) decades ago, and up to this summer it looked something like a palm tree sitting atop a large onion. Or a long-leafed dracena plant whose stem, near ground level, had swollen almost to the size of a bowling ball. The plant looked very interesting, but not particularly attractive, and the sharp edges of its long, strappy leaves were grabbing at me every time I walked by too closely.

So last summer, I was going to toss the plant in the compost pile; instead, I lopped off its top to about 3 feet in height. What remained was nothing more than what looked like a tan bowling ball halfway immersed in a pot of soil with a inch-thick, bare stem tapering skyward from its upper side.My ponytail palm

After pruning, I ignored the plant just as I had done for the past few decades. Ponytail palm doesn’t crave attention. As testimonial to the ability of the bulbous trunk to store water, the plant went months between waterings. What’s more, it’s been growing in the same pot with the same potting soil for all these years, no small accomplishment with the bulbous base of the plant, rather than potting soil, occupying much of volume within the pot. And fertilization? A rare event.

Now for the good part: Since being decapitated, the ponytail palm has sprouted tufts of leaves in various places. A few new sprouts appeared near the top of the plant, just as most plants would do when the top bud or portion of a stem is cut back. A tuft also appeared lower down along the stem. And seemingly out of nowhere, a couple of tufts of leaves sprung from the rounded surface of the swollen bulb.

Over time, each of those tufts of leaves is going to elongate into a stem capped by a tuft of leaves.

The plant is more verdant and very attractive now, and I should be able to direct its growth to remain so. If not, I can lop back one or more ponytails and start again.

Ponytail, Down The Road

Ponytail palm is quite a dramatic site in its native, tropical haunts. There, the plant’s stem keeps elongating, lifting its mophead of scrappy leaves higher and higher. Tufts of leaves might sprout lower down along the stem, or from the base, just as did my decapitated plant. And the bulbous base — it keeps growing fatter and fatter.

Ponytail palm in Puerto Rico

Ponytail palm in Puerto Rico

In Puerto Rico, I’ve seen ponytail palms the were three feet across as ground level. My plant will get a new pot as soon as it bursts out of its old one. But eventually . . . ?

Seeds! Restrain Me

Years ago, the routine was that seed catalogues would arrive in the mail sometime after January and all of us gardeners would place our orders to receive seeds a couple of months later. Now, I have catalogs that have already been sitting on my kitchen table for a few weeks, with orders waiting to be finalized. And not primitively finalized, with pen and paper, but seamlessly, on the internet.Ordering seeds

Seed companies realized that the early bird gets the worm: We gardeners, once cold weather has set in, are likely to get seduced by any reference to fresh tomatoes, so are most likely to order from the first catalogs we see. All this is for the better, for me, at least, because my efforts to limit down time in the garden mean that I need to have seeds in hand and ready to sow that much sooner. I could sow lettuce seeds today, for harvest in the greenhouse. Onion and leek seeds get sown in seed flats at the beginning of February, lettuce for transplants to be planted outdoors, follows soon after that, along with pansies and snapdragons, and the march continues from then on right through September.

One thing that has not changed over the years is that I’m still enticed and thankful for what we gardeners have at our fingertips. From just a phone call, a few dollars, or a few computer keystrokes, plants from all over the world end up in my garden. How can I resist trying Ruby Mist Love Grass, Cajun Jewel Okra, and Blazing Stars this year, along with such old standbys as Buttercrunch lettuce, Blue Lake beans, and Lemon Gem marigolds?

CATS ON A COOL, GREEN ROOF

Not Green Enough

I’m looking up at my green roof, my evergreen roof, and it’s not green enough. Literally. I had expected that by now the roof would be solid green. It’s not.Two cats on my green roof

The green of this roof was supposed to come from the plants growing on it. Because conditions up on the roof are very harsh, the plants I chose were tough ones, hens-and-chicks (Sempervivum spp.). Hens-and-chicks look like little cabbage heads of stubby, succulent leaves. Baby plants push out from around the mother plants, grow, and make more babies, and so on, ad infinitum. Or so I hoped.

The roof only has a couple of inches of “soil” on it and covers a porch, so has no heated space or insulation beneath it. If winter temperatures plummet to 10 degrees below zero, not uncommon here, temperatures within that thin layer of soil also plummet to 10 degrees below zero. If summer temperatures hit 95° in the shade, the soil, which is shaded at one end, also hits 95° — and more in the sunny end. The roof never gets watered, except by natural rainfall.

The hens-and-chicks have established and survived and spread. But not enough. By now, I expected the roof be packed solid with hens-and-chicks, with excess plants spilling decoratively over the front edge. But too much soil still shows. Part of the green problem is that hens-and-chicks are not all that green; the leaves are more pale blue-gray.

Enter Angelina

So I’ve been taking steps to green up the roof.

The first step has been introducing a companion plant for the hens-and-chicks. The plant, which I believe is ‘Angelina’ rocky stonecrop (Sedum rupestre), has been magically appearing here and there in and around my rock walls. Well, not magically. As with other succulents, ‘Angelina’ easily grows into whole new plants wherever any piece of stem or leaf merely drops onto the soil. Over the past few years, whenever I’m so inclined, I grab a few pieces of ‘Angelina’ and toss them up on the roof. They’ve rooted and spread, parading up there as forest-green patches.Sedum Angelina on green roof

I periodically get more serious with ‘Angelina’. “More serious” means filling some cell-type seedling flats with a “soil” of equal parts moist peat and perlite, and poking inch-long pieces of leafy ‘Angelina’ stems into the mix. After a winter in the greenhouse or a sunny window, those cuttings are rooted enough to plug into holes I dibble into the soil on the roof among the hens-and-chicks. The roof is a little more than 100 square feet. Each plant could potentially fill up a square foot in a couple of seasons, so 100 cuttings of this plant would do the trick and take up only a couple of square feet of space in their holding cells.Propagating Angelina plants

Another step to making the rooftop greener is to beef up the “soil.” The soil is actually a mix of equal parts peat and calcined montmorillonite clay (a.k.a. kitty litter, unused). The mix is heavy enough not to blow away, and the peat is relatively resistant to decomposition. Some shovelfuls of this mix periodically tossed up on the roof replace what’s washed away or settled.

The mix is lean in nutrients so, come spring, I could also beef up the rooftop with some fertilizer. Not much, though, because succulents are light feeders and too much fertility would encourage weeds.

Is Green Better Than . . . ?

I don’t get it. Green roofs are so “in” these days, for their green appearance and for their environmental green-ness. Sure, green roofs insulate rooms below from heat and cold. And green roofs capture and evaporate some rainwater rather than let it run down gutter pipes and into sewers or streams. The air above green roofs stays cooler than that above conventional roofs, so heat islands aren’t created.

But are the above good enough reasons to put plants on a roof? After all, good insulation also insulates, a lot better than soil and with a lot less weight. And how much water could a roof of succulent plants — plants known for their low water usage — evaporate?

Much as I love plants, I’d rather see solar panels on roofs. My green roof is for looks (and not sunny enough for solar panels).

And A Bow To The Weeds

My green roof is a testimonial to the tenacity of plants. Despite the leanness of the soil mix and its being initially pretty much weed-free, some weeds have colonized the roof. And they survive, despite the harsh growing conditions up there.Weeds on green roof

The weeds that came in weren’t succulents, but grasses and perennials such as foxtail grass and goldenrod. Every time I look up at the roof, I am awed at how these and other plants not only got there, but how they manage to survive there year after year.

Weeding up there would seem such a travesty — and be very difficult.

 

UPCOMING PRESENTATIONS

I will be offering lectures and workshops at a number of venues across the country in the upcoming year. If interested, go to the “Lecture” page of this website for a current listing, which will be updated as needed.

IN WITH ENDIVE, OUT WITH ASPARAGUS

First Harvest At Season’s End

Finally, I’m harvesting endive from the garden, just as planned when I settled seeds into mini-furrows in a seed flat back in July. After leaves unfolded on the seedlings, I gently lifted them up and out of their seed flat, helping them up with a spatula slid beneath their roots, and into individual cells in a GrowEase Seed Starter.Endive seedlings

Also as planned, a bed in the vegetable garden was freed up from harvested sweet corn in early September. After removing corn stalks and slathering an inch of compost on top of the bed, the endive plants were snuggled in, 2 rows down the 3-foot-wide bed, with one foot between the plants in each row. In October, I laid row cover over the plants, plus a tunnel of clear plastic film supported by hoops, to protect plants from bitterest cold.Endive under plastic tunnel

Endive harvest could have begun earlier. But there was no need to, with so much other fresh salad fixings in the garden. And cold weather anyway helps bring out the best in endive. The inner leaves, partially blanched as they folded in among themselves from close planting, are now especially sweet, succulent, tender, and tasty. 

What Endive, Who?

Just to be clear on the identity of my endive, it’s botanically Cichorium endivia var. latifolia, also called escarole, broad-leaved endive, or Batavian endive. Besides delicious fresh, it’s a key ingredient in the classic Italian white bean and endive soup.

I used to also grow another endive, C. endivia var. crispum, also called curly endive or frisée. It’s very similar, except for frilly leaves. In my experience, it’s less succulent and more easily damaged by cold.endive and beets

We’re not yet finished with “endives.” There’s also Cichorium intybus, also known as Belgian endive or witloof chicory, with small heads that are torpedo-shaped and pale green or white.

More machinations are needed to grow this Belgian endive, beginning with sowing in spring and waiting the whole season for a large taproot to develp. At season’s end, the roots are dug up, trimmed to a foot or so long, then packed together upright in boxes of loose potting soil, sawdust, or anything else that will hold moisture. The roots resprout, and the goal is to keep the developing heads in the dark, either by putting a few inch depth of sawdust or sand over the roots or by keeping the whole box in darkness. Too much trouble for me. Plus, very little flavor. (Also, mine weren’t all that successful.)

Bye, Bye Asparagus

Speaking of pale leaves, I’m happy that my asparagus’ leaves yellowed a couple of weeks ago. The plants had been growing vigorously all season since harvest ended in July, the green stems and leaves gathering sunlight to pump energy down to the roots, to store and then fuel next year’s growth of the young spears. Finally, the plants yellowed as what nutrients were still left in the stems and leaves headed downward, to the roots.

My short-bladed brush scythe was the perfect tool to make quick work of the plants, a fluffy addition to the compost pile.

After July, germinating and growing weeds became too hard to reach and root out among the 6-foot-high forest of feathery stalks. With the asparagus shoots and leaves cleared away, I was recently able get into that bed for a final weeding. The two-inch-deep mulch of leaf mold I spread after weeding will slow weeds down next year, conserve soil moisture, and feed soil microbes and, in turn, the asparagus plants for what I predict will be a bountiful harvest.

ALL-AMERICAN THANKSGIVING

Danger of Squashing

Thanksgiving is a most appropriate time to put together a truly American meal, one made up of native plants, many of which are easily grown, that might have shown up on the original Thanksgiving table about 400 years ago.

(The date of that first feast was 1623 but the date for celebrating Thanksgiving in all states— on the final Thursday in November — was not fixed until 1863, with a presidential proclamation. Lincoln hoped that a unified date throughout the country would help unify the nation during the divisive days of the Civil War. Not so. Confederate States refused to accept that date until the next decade, during Reconstruction. Another presidential proclamation, by F.D.R. changed the date to the 4th Thursday of November, in an attempt to boost the economy. Would a new date help now?)

On to garden history . . . Back in early November, I picked a 20 pound berry that was growing from my compost pile. Actually, I harvested about a dozen of these heavy berries. Don’t imagine them in terms of strawberries or blueberries. Imagine a winter squash, which botanically-speaking is a berry, a special kind of berry called a pepo. Squashes are native American fruits.

Twenty pounds is no lightweight for a squash. Nothing like the 2,023 pound (still a berry) record-holding pumpkin, of course, but big nonetheless. Especially so when you consider that mine weren’t grown to vie for any records, but for eating.

Argonaut is the variety name of my 20 pound berries. It seems to be a kind of butternut squash stretched out anywhere from 20 to 30 inches long and 8 inches across at its fattest point. It’s relatively easy to grow if you can figure out where to let the 20-foot-long vines trail. In May I had sown the seeds in 4-inch pots and then transplanted a few right atop my compost bin. I put another couple into compost-filled holes I had scooped out in a mountain of leaves (for future use, after rotting down into rich “leaf mold”) kindly deposited here by a local landscaper.Argonaut squash hanging in basement

Argonaut needs a long season before the fruits turn buff tan ripe. Longer than my plants got, this year, at least, because only some of them had only some ripe color. Still, they taste very good, and squashes will ripen, to some degree, after harvest.

The question is what to do with a dozen humongous squashes. Ideal storage is in a cool room: my basement, where temperatures no and in the next few weeks will be in the low 50s. Mice occasionally make their way into my basement. They could make many meals of the squashes. I mouse-proofed each one by tying it with a sturdy length of rope in a noose around its neck, then hanging it from the basement rafters.

More Than a Snack Food

Corn is another native American food, with popcorn predating that first Thanksgiving in America by thousands of years. Kernels have been found in the remains of Central American settlements almost 7000 years old. Four hundred years ago, the Pawtuxet Indian Chief, Massasoit, showed up at the first Thanksgiving feast with a deerskin sack filled with popcorn, a food hitherto unknown to the colonists.

Popcorn is the corn I’ll bring to our Thanksgiving table. Most people eat popcorn as a snack, but there’s no reason it couldn’t stand-in for potatoes, rice, bread, or any other carbohydrate-rich foods. Popcorn has the advantage of always being whole grain, and being very quick and easy to prepare.Popcorn hanging from kitchen rafters

Corn was the best grain crop to grow in the rude conditions of a settler’s clearing. Little land preparation was needed, and the ripe ears could be left dangling on the stalks until there was time for harvest. I could grow it under “ruder” conditions, but I plant it in compost-enriched soil with drip irrigation for consistent water. Two 12-foot long by 3-foot wide beds provide enough popcorn to carry us through the year to the next harvest season.

Since harvest, a few weeks ago, unshelled ears of Pink Pearl and Dutch Butter popcorn have been hanging from the kitchen rafters, decoratively and conveniently at hand.

Bogless Cranberries

Cranberries are among the few native American fruits sold commercially.  Although they do not provide a great deal of nourishment, they spice up present and past holiday dinners.

Cranberries can be grown in a home garden if the soil is very acidic (sulfur will make it so if it is not), rich in organic matter, and has consistent moisture. A bog is not needed.Cranberries on plants

Given the right growing conditions, cranberries can be an ornamental, edible groundcover. I once planted them as such, along with the other edible, ornamentals lowbush blueberry and lingonberry, as well as rhododendron and mountain laurel, non-edibles that enjoy these same soil conditions. The cranberries grew too well, threatening to overtake the rest of the bed. Since they were not my favorites among all the plants in the bed, they no longer live there.

Many more native American plants, such as beans, groundnuts, and Jerusalem artichokes, can round out this Thanksgiving feast. And, of course, among non-plants, turkey.

SENSORY DELIGHTS, NOW AND FUTURE

A Scented Wave

    For the past couple of weeks, every time I walk upstairs to my home office, a sweet aroma hits me like a wave a few steps before I reach the top stair. This wave pulls me forward, a room and a half away, to the Meyer lemon plant sitting in my office’s sunny, south-facing window.Meyer lemon tree in pot
    The wave began when only a single Meyer lemon flower had opened. Now, the plant, only a foot and a half high, is decked out with more than 20 flowers.
    This “tree” started life as a cutting I took from a friend’s old tree that anyway needed some pruning. With their bottom leaves stripped off, the 6 inch long stems rooted reliably in a few weeks after their bottom portions were plunged into a moist mix of equal parts peat and perlite, and transpiration was reduced with a clear plastic overhead. Bright, but indirect, light allowed for photosynthesis without cooking the plants in their “mini-greenhouse.”
    My most important job now is to keep an eye out for scale insects, which show up as either brown bumps (armored scale) or cottony tufts (cottony cushion scale) on leaves and stems. Rubbing off these insects or dabbing them with a Q-tip soaked in alcohol deals with them unless the population gets out of hand. Repeated sprays with horticultural oil can be the next line of defense.Pollinating Meyer lemon
    Every couple of days I pick up the artist’s brush lying next to the potted plant, and dab it on the tips of some of the flowers. I’m not painting; I’m picking up the yellow pollen from each flower’s male anthers and dusting it onto each flower’s, and neighboring flower’s, female stigmas.
    A good proportion of those pollinated flowers should go on to provide the next treat from Meyer lemon, fruit, which this plant usually bears prolifically. Meyer lemon is actually a hybrid of lemon and sweet orange, with both parents reflected in the flavor. A final plus for this plant is, in contrast to many other citrus plants, is that its stems lack thorns.

Another Fig Option

    Greenhouse figs still bear fruit; with low light and cool temperatures, they’re not worth eating. I did recently harvest a few figs from a Kadota fig plant that had been planted outdoors.
    “Had been planted outdoors?” So where is it now? It’s still outdoors, but not planted. It’s in a pot. Like my few other potted figs, the potted Kadota plant will move down to the basement before temperatures drop below 20°F.Potted Kadota fig in ground
    Unlike my other potted figs, the Kadota plant did not require daily watering all summer. Or yearly root pruning and repotting to give the roots new room to grow and explore. The reason is because Kadota is in an 18” diameter plastic pot with some holes I drilled in its side. In spring, I sunk the pot up to its rim into a waiting hole in a bed on the sunny, south side of my house. The plant’s roots wandered outside the pot into the surrounding soil through the existing opening in the bottom of the pot, as well as through the side openings. Once outside the pot, roots were able to fend for themselves garnering water and nutrients for the small tree.Potted Kadota, out of ground
    Kadota, like many other fig varieties (but few other kinds of fruits), bears fruit on new shoots. Very convenient. Rather than having to squeeze spreading limbs down my narrow basement stairs, I can cut back all the stems rather drastically, which also has the benefit of stimulating vigorous, new shoots at the cut stub, new shoots that will bear fruit next year. Not too drastically, though, or too long a time might be required for the fruit to develop and ripen. And Kadota is already a late ripening variety.
    Of all my figs, Kadota is my favorite, both for its almost chewy skin and the rich, sweet flavor lying within. Even those recently harvested ones.

Comely, Fragrant, and Poisonous

    Another sensory treat slated for winter comes compliments of Angels’ Trumpets (Brugmansia spp.). The flowers of these poisonous(!), subtropical trees are giant, 6 inch long trumpets in pale colors and from which wafts a delicious aroma, especially at night. These subtropical plants can grow into trees but are easily kept much small, in pots, in cold climates.

Angels Trumpets, in past years

Angels Trumpets, in past years

    I neglected my plant all summer and on into fall; when I retrieved it to protect it from coldest nights, it was just about leafless and ready for the compost pile. Then I noticed some small leaves beginning to develop along its almost bare stems. And some stems had the beginnings of flowers on them.
    So I brought Angels’ Trumpet indoors, next to a sunny window (and next to the Meyer lemon). It looks sad now but should revive and, judging from my previous experiences with this plant, flower well most of winter. In summer, with long days, it takes a rest from flowering — which is why I ignored the plant.

UBER ORGANIC & A BEAUTIFUL BLOSSOM

‘Tis the Season

    ’Tis the season to really put the “organic” in organic gardening. “Organic,” as in organic materials, natural compounds composed mostly of carbon, hydrogen, and oxygen. “Organic,” as in materials that are or were once living, things like compost, leaves, manure, and hay.Vegetable beds in autumn
    I’ve spread compost over almost all my vegetable garden beds. A one inch depth laid atop each bed provides all the nutrients the vegetable plants need for a whole season, in addition to other benefits such as snuffing out weeds, holding moisture, improving aeration, and nurturing beneficial, pest-fighting organisms.Compost piles
    I’m also finishing up the bulk of making new compost for the year. Pretty much everything organic — old vegetable plants, kitchen trimmings, even old cotton clothing — go into the compost piles. The primary foods, though, are hay, which I scythe, rake up, and then haul over from my hayfield, and horse manure, which I pitchfork into the bed of my truck, then unload into a garden cart to haul over to the compost bins.
    Autumn leaves piled up last year have rotted down into “leaf mold,” essentially the same material as compost, with the same benefits. This pile arrived as a truckload last autumn thanks to the generosity of a local landscaper. The leaf mold isn’t quite as thoroughly broken down as the compost so I’m hauling that over to all my young trees and shrubs, and then spreading it beneath them.
    I’m also on the lookout for trash bags stuffed with leaves. Local leaf gatherers/baggers contact me when bags are ready for pickup. I toss the bulging bags into the bed of my pickup truck, then haul them over to and unbag them beneath my blueberry, raspberry, currant, and gooseberry bushes.

Organic Matters

    All this compost, hay, manure, leaf mold, and leaves are food for soil organisms. Most of the food is carbohydrates, the carbon, hydrogen, and oxygen that combine to make sugars, starches, cellulose, chitin, and pectin of living organisms. As carbohydrates are gobbled up, nutrients are released for plants.
    In their raw state, these organic materials are relatively low in plant nutrients. Compare the one pound of phosphate you get from ten pounds of 10-10-10 chemical fertilizer with the 100 pounds of compost you need to offer  that same amount of phosphorus.Raking hayfield
    You could get that one pound of phosphate from only ten pounds of an “organic” source such as bone meal. That would be easier than shoveling out 100 pounds of compost — but the soil would then be deprived of 90 pounds of carbohydrate and other bulk that feeds soil organisms and, in turn, bestows physical, nutritional, and biological benefits in the soil.
    So I’m continuing to haul manure, hay, leaves, leaf mold, and compost for my garden. It’s also good exercise.  

A Beaut’ Worth Reviving for Winter

    Much lighter work is digging up an amaryllis bulb. I’ve always considered amaryllis too gaudy a plant, one giant, often flaming red flower appearing atop a bare stalk in early winter. And then, last autumn, someone sent me a big, fat amaryllis bulb along with a pot to plant it in, as well as some potting mix. How could I help but plant it?

Amaryllis now

Amaryllis now

    The flowers were prolific and awesome, flower after flower (yes, flaming red) appearing on each stalk, and stalk after stalk of flowers. This one was a keeper.
    Green leaves, the more the better, are what fuel the following year’s blossoms. (One flower stalk for every nine leaves, according to one source.) Periodic little fertilizer and, as needed, water kept the plant growing well until warm weather settled in for good in spring. Then I tipped the bulb out of its pot and nestled into a hole in a bed in part shade with rich soil and drip irrigation.

Amaryllis late last winter

Amaryllis late last winter

    Just before a night when temperatures dipped into the low 20s, I dug up the bulb and potted it up. It now sits, unwatered and leafless, in the cool temperatures of my north-facing mudroom. A couple of months of cool temperatures, 50 to 60°F, is good for waking up the flower buds within the now fatter bulb — and its small, baby pup, thank you.

CHANGING STEMS, CHANGING LEAVES

Korean Giant Pear, In Training

    Stepping down the two stones at one end of my bluestone wall, a friend looked up and asked, “Are you torturing or training this tree?” He was referring to the tree on one side of the the stairway, one long stem of which was arching overhead, held in that position with a string tied to a stone on the opposite side of the stairway.
    “Training,” I replied. The stem was being coaxed into this seemingly submissive position both for form and function. Not to inflict pain.Pear branch, bent in training
    But first, something about this tree. It is an Asian pear, the variety Seuri Li that I created many years ago by grafting a Seuri Li stem on a semi-dwarfing rootstock (OH x F 513). It’s initial training was as an en arcure espalier. Deer found the young pear trees sitting high enough on the backfilled soil behind the wall a convenient smorgasbord; they didn’t even have to bend down to nibble at them. So the espalier became a deer-modified en arcure.
    Seuri Li never bore as well as the other Asian pears — Yoinashi, Yakumo, and Chojuro — trained above that wall. Last year I lopped back one major stem of Seuri Li and grafted a stem of the variety Korean Giant onto the stump. The graft “took,” and fueled by the established root system, buds from the grafted stem soared skyward.
    Growth from the graft was vigorous enough to start a large arch over the two stone stairway. A very big en arcure.

Hormonal Control

    Training to en arcure entails bending the single stem of a young fruit tree over to its neighbor. Typically, a bud near the high point of the arch will grow out into a vigorous shoot which is then bent in an arch in the opposite direction, to its neighbor on the other side. The vigorous shoot growing from the high point of that second arch is trained back to the next tier of arch  of first neighbor. And so on, as high as desired.
    The end result is a flat plane of adjacent trees decoratively linked as a living fence.
    The fence might be considered functional, but the truly functional aspect of en arcure is physiological. Enhanced vigor of the highest buds can be traced to a plant hormone, auxin. Auxin, present in all plants, is synthesized in the uppermost growing points of a plant, either the tip of a vertical stem or the high point of an arched stem. But this auxin also puts the brakes, to some degree, on growth from buds below that high point.
    Growing fruit takes energy, as does growing stems; more fruit means less stem growth, and vice versa. (Left to their own devices, plants more or less balance these needs themselves, although not always to our satisfaction, which is why you have to pluck off peach fruitlets so that a peach tree can pump more energy into the fewer — and resulting — tastier fruits that remain.) Bending a branch over quells its growth, coaxing it to divert more energy to making fruit — except for the uppermost bud, which puts out a vigorous shoot.
    My plan, then, is to have that long stem of Korean Giant pear festooned with flowers in spring and fruits in autumn as it arches over the stone stairs. Plants don’t read plant physiology books and tow the line to all this theory, but I’m confident in a fruitful, decorative future for my plant because Asian pears generally are very eager to bear fruit.

Uncommon Autumn Color

    Speaking of physiology, I wrote last week about the carotenoids, tannins, and anthocyanins that make autumn so warmly colorful, and especially so this year here in the Hudson Valley. A few plants, not commonly planted, are contributing boldly to that warmth.
    •Japanese Stewartia (Stewartia pseudocamellia) earns its keep year-round, with rich, red autumn leaf color right now, bark mottled in hues of gray and brown in winter, and camellia-like flowers in early summer.

Stewartia in autumn

Stewartia in autumn

    •Fothergilla (Fothergilla major) also earns its keep for much of the year, with bottlebrush clusters of fragrant, white flowers in spring and leaves that turn brilliant shades of yellow, orange and red in autumn.

Fothergilla in autumn

Fothergilla in autumn

    •Korean mountainash (Sorbus aucuparia) bears flat-topped clusters of white flowers in spring. In autumn, leaves take on a yellow color enriched with some brown and hints of red. Clusters of red fruits also ripen in fall. They’re small, but edible, a nice nibble.

Korean mountainash in auatumn

Korean mountainash in auatumn

    •Pawpaw (Asimina triloba) bears large leaves that have lost their summer-y, tropical look and have turned a clear yellow. The large fruits, also with tropical aspirations, have been ripe for a few weeks, with flavors akin to vanilla custard, banana, or crème brûlée. Take your pick.

Pawpaw, autumn leaf color

Pawpaw, autumn leaf color

THE GOOD AND THE BAD OF A DRY AUTUMN

Just Like Korea?

    The bone dry weather blanketing the Hudson Valley and much of northeastern U.S. does have its saving graces. For one thing, it forces perennial plants to shut down and direct their energies to toughening up for cold weather lurking over the horizon. That’s a good thing — unless, of course, the soil gets dry enough to kill a plant. Deciduous plants have the option, before that happens, to drop their leaves, drastically reducing their water loss and needs.
    This dry autumn weather is not unlike that in many parts of Korea. So what? When it comes to cold-hardiness, some plants that survive Korea’s frigid winters typically are done in by our similarly frigid winters. One plant that comes to mind is Asian persimmon (Diospyros kaki). The chances of an Asian persimmon surviving a winter here at my Zone 5 farmden and ripening its fruits are generally not good. Autumn weather like this year’s ups the odds.

Asian & American persimmon, compared

Asian & American persimmon, compared

    (American persimmons (D. virginiana), on the other hand, easily survive, and varieties such as Szukis and Mohler reliably ripen their fruits here.)
    Survival of an Asian persimmon here is very topical to me because I planted one this past spring. I did plant one of the most cold-hardy varieties, Great Wall. This variety is allegedly hardy and will ripen fruit in Zone 5 (at least that’s what Lee Reich wrote in the book Uncommon Fruits for every Garden). This autumn weather should help get it through its first winter here.

Autumn Color Chemistry

    This bone dry weather has also made for glorious autumn leaf colors, even more than usual. Did I write, last year, that autumn color was the best ever, and the year before that, and . . . ? The reason for the exquisite color is physiological (the leaves’, not mine).
    Leaves can, of course, be green. Other colors also figure in, obscured by the green of chlorophyll until autumn’s cooler weather and shorter days dissolve away the chlorophyll to let these other colors strut their stuff. Autumn’s fiery oranges and yellows, especially prominent in sugar maple, gingko, aspen, hickory, and beech, are from carotenoids. Tannins are another color component that get expressed in autumn; they give oaks their brown color, and enrich the yellow hues of beeches and hickories.

Japanese maple in autumn

Japanese maple in autumn

    Unless an early freeze burns off trees’ leaves while they are still green, those oranges and yellows and browns put on a reliable show every autumn, no matter what the weather.
    Not so for the reds and purples of autumn leaves. These colors are expressed by anthocyanins, compounds which are not present or obscured by the green of chlorophyll during the growing season. Anthocyanins develop in autumn, and they need sugars for their development. Sugars come from photosynthesis, whose driving energy is sunlight.
    So, less rain and more sunny weather means more photosynthesis, more sugars, and better red and purple color in such plants as blueberry, sourwood, scarlet oak, and sugar maple. A recent spate of warm days and cool nights enhances the whole effect, the warm days spurring photosynthesis and the cool nights slowing respiration to slow “burning” of sugars.Blueberry, in autumn color

But How About Some Rain?

     Much as I revel in day after day of clear, sunny weather and trees alive in color, I’d like a few heavy rains. The water supply of many homes on my road tap into shallow groundwater, the level of which is very low at this point.
    Also, my drip irrigation system has been disconnected. The timer, the pressure reducer, and the filter, all of which must greet water as it comes out the spigot, before it enters the main lines, have been brought indoors to be protected from the recent freezing temperatures.
    With reduced transpiration from cooler weather, autumn’s usual rainfalls can carry winter radishes, endive, Chinese cabbage, and other cool weather vegetables on a few more weeks until the end of the season. But we need these usual rains.