Controversial Garlic & Corn

When to Plant & Whether to Plant, Corn & Garlic

Into the ground goes the stinking rose. That’s garlic. As a matter of fact, by the time you read this my garlic cloves will have been in the ground for awhile, since the beginning of the month, already sending roots out into the soft earth.

Planting garlic this early is sacrilege in most garlic circles. But it may make sense.

Garlic needs a period of cool weather, with temperatures in the 40s, to develop heads. Without that cool period, a planted clove merely grows larger, without multiplying. Which is why it’s planted in fall. Spring-planted garlic might still get sufficiently chilled or needs to be artificially chilled, but yields are generally are lower than fall-planted garlic. Garlic cloves planted 4 inches apart in a furrow.

Lower yields could also be because the cloves, planted in spring, must put energy into growing both leaves and roots. Roots grow whenever soil temperatures are above 40 degrees F., so fall-planted cloves start growing roots immediately. And for quite a while because, with the ground cooling more slowly than the air, balmy weather lingers long in the soil in fall, especially when it’s covered with an insulating layer of wood chips, compost, straw, or other organic mulch.

My reasoning for late summer planting rather than fall planting is that the sooner the bulbs are in the ground, the more time roots have to grow before temperatures drop consistently below 40 degrees. More root growth now means more roots to fuel leaf growth in spring which, in turn, means bigger heads to harvest next summer. More root growth also means that cloves are more firmly anchored into the ground through winter, so are less likely to heave up and out of the ground as it freezes and thaws.

The caution against planting as early as I suggest is that leaves might awaken and push up through the ground in fall, only to be snuffed out by winter cold. True. But garlic is a monocotyledenous plant, so its growing point, like that of other “monocots” (such as lilies, onions, grasses, orchids, and bananas), lies beneath the ground, protected from cold. The usual recommendation for garlic planting is to plant early enough to allow time for some root growth but late enough so leaves don’t appear aboveground.

Leaves peering above ground in fall might even help spur root growth, at least once they start exporting energy. (Their initial growth is fueled by energy reserves in the planted clove.) Even if winter cold kills the leaves, they will have done some good if they begin growth soon enough. The sloppy mess of frozen leaves could, admittedly, breed unwelcome bacteria or fungi.

Biological systems are complex, and plants don’t read what I write and may not follow my reasoning. Just to check, I planted only half of my garlic bed; I’ll plant the other half in a month, the recommended planting time. Next summer I’ll know if my garlic cloves followed my reasoning.

Corn, Worth Planting

Garlic is for the future; sweet corn is for the present. Whoever it was — and there were plenty of those “whoevers” — that recommended against growing sweet corn in a small garden because it wasn’t worth the space did a disservice to gardeners. My garden isn’t all that big yet we’ve been harvesting all the sweet corn we can eat and freeze since early August and will continue to do so for much of this month.

Sweet corn can share a bed with other vegetables, lettuce here.

Sweet corn can share a bed with other vegetables, lettuce here.

My vegetable garden is in 18 foot long, 3 foot wide beds, and I planted 4 beds at two week intervals from early May until the third week in June. I sowed the seeds sown in hills (clumps) to end up with 3 to 4 plants every two feet in a double row running down each bed. Planting in hills provides better pollination and resistance to wind than planting rows of single, more closely spaced plants.

Each stalk yields one or two ears, so a conservative 1.5 ears per stalk and 3 plants per hill computes to yields of 81 ears of corn from each of four beds. That’s a lot of sweet corn! And not just any sweet corn, but Golden Bantam Sweet corn, the standard of excellence in sweet corn a hundred years ago. You can’t buy ears of this variety these days. It’s the only one I grow.

Corn, densely planted, and ready for harvest

Corn, densely planted, and ready for harvest

Pumping out all those delectable ears requires good growing conditions. To whit: Very fertile, well drained soil; water as needed; and little competition from weeds. I slathered the beds with an inch or more of compost in spring and all summer plants’ thirst has been daily and automatically quenched with drip irrigation.

I didn’t even have to devote those beds to only sweet corn for the whole season. Earliest plantings were preceded and are followed by quickly maturing vegetables such as lettuce, spinach, and radishes. Turnips, winter radishes, and bush beans are other possibilities to follow harvest of those first sowings of sweet corn. A row of carrots and beets was sown

Delectable Golden Bantam, a hit since 1906

Delectable Golden Bantam, a hit since 1906

up the middle of the second planting shortly after the corn emerged and is doing fine now that the corn has been harvested and those plants cleared away. I’m still trying to figure out what to plant to follow the third planting, which is just finishing up.

I also grow popcorn, but that’s another, also delectable story.

A corn bed, a few weeks after harvest & cleanup

A corn bed, a few weeks after harvest & cleanup


  1. Gary
    Posted September 19, 2014 at 2:37 pm | Permalink

    A professional garlic grower explained the early garlic question at his presentation last weekend (Mother Earth News Fair): garlic will survive being nipped back by cold weather twice, but the third is usually fatal. So, I figure I’m safe planting mid to late September in my micro-climate, and past experience has borne this out.

    • Posted September 19, 2014 at 2:51 pm | Permalink

      I’d like to know where the “professional” grower got this information; probably on his own “back forty,” which may or may not be valid. (It may not be valid everywhere, or other things might also have been at play when he made that observation. Nothing I saw in the published literature said anything about the “third nip” rule. Not too be contrary, but don’t believe everything you read or hear (except from me — just kidding). I’ll report on my garlic findings at a later date, and comment on the limitations of my observations.

      • Gary
        Posted September 20, 2014 at 6:18 pm | Permalink

        You’re right, the garlic grower was Ron Stidman of Enon Valley garlic, and he presented his “third nip” as a rule of thumb from his own experience with a number of different varieties. Not a trained horticulturist, but he had enough personal experience to make a nice presentation. He did share a good bit of his early mistakes, and how Cornell pulled him out of some tight spots. I didn’t catch him say anything that was contrary to the recommendations I’ve gotten from PSU Extension.

      • CS DeBerry
        Posted September 20, 2014 at 9:12 pm | Permalink

        The MEN Fair speaker was from Enon Valley Garlic near Pittsburgh, PA.

  2. Kevin Sio
    Posted September 20, 2014 at 8:13 am | Permalink

    Central NY/Finger Lakes gardener here: This area is well know for “muck land” crops, onions, potatoes etc, including garlic. The wise old Italians who planted these crops used this method of determining planting and harvesting dates for garlic: plant on the full moon of Oct, harvest on the full moon of July. I typically get my garlic in anywhere from late Sept to early Oct. For me it’s more a matter of when I have the time. After planting I mulch heavily with straw. Depending on the variety, I typically see some growth before the winter really sets in but have never in my 25 years of gardening in this location observed any damage to the plants. After the weather warms up in the spring, I pull the mulch back for a couple of weeks to let the ground warm up, then pull it back over the plants and add to it if needed. I have been enjoying reading your blog very much, thanks. Kevin

    • Posted September 20, 2014 at 12:28 pm | Permalink

      So no damage even after green sprouts get frosted. If you had the time, you might sometime try planting even earlier.

  3. Kathy Violet Fern
    Posted September 20, 2014 at 10:09 am | Permalink

    I read your corn planting with interest as I was “taught” not to bother with corn. 81 ears is a plenty! And it sure looks delicious. I hope you post about popcorn, too. I tend to follow the “plant garlic after the first frost” rule but now, well we had our first frost! Last year our first frost was Oct 29. (Or mine I should say as I like to record it on a wall calendar each year. I then hang all the calendars together so I can compare dates over the years. I mostly record bird sightings but frost and bloom dates are also helpful.) So, now what? It is supposed to be 70 F today. I think I will go with my gut and plant. I tend to grow and plant by some sort of inner intuition and its usually quite accurate. What type(s) of garlic do you grow Lee?

    • Posted September 20, 2014 at 12:27 pm | Permalink

      I grow Music garlic and possibly some others. I have to admit to not putting a lot of effort into my garlic plantings. I know this is almost sacrilege these days, but I’m not a big fan of garlic. I’m always amazed at the sometimes fairly small gardens that give over a lot of space to garlic. I’d opt for mote tomatoes, peppers, peas, and lettuce.

  4. alan gorkin
    Posted September 20, 2014 at 1:58 pm | Permalink

    planted with crops underneath is a great idea. I’ve got a small garden and always shied away from corn. might even try sunflowers with adequate space to grow underneath. thanks!

  5. Robert Pavlis
    Posted September 21, 2014 at 8:37 am | Permalink

    I tend to start my garlic early as well–usually mid Sept.

    You might be interested in this post that softneck garlic does not grow well in the north.

  6. Susan
    Posted September 29, 2014 at 4:37 pm | Permalink

    I planted corn for the first time this year, and the variety I planted is Golden Bantam. Although I got a good harvest, I’m less than impressed with the taste. I think, perhaps, that the problem is that I had a really difficult time knowing when they were ready to harvest. Most of the ears were starchy, so I’m assuming I waited too long. And then I’d try to be careful not to leave them on the stalk too long, and I’d end up with immature corn. Help! What are your tips for knowing just the right signs that they are ready to harvest?

    • Posted September 29, 2014 at 5:15 pm | Permalink

      Harvesting corn at the right time is an art that gets easier with practice. Check out the tassels. They should be just about dry. Feel the ear in its husk. It should feel plump. Pull back enough husk to get at some kernels and push them with your fingernail. A milky juice should come out. And finally, harvest an ear and taste it. It should be sweet with rich corny flavor — but definitely a lot less sweet that all the new super sweets. After a couple of years of observation and testing, you’ll have mastered the art.

      • Naseer
        Posted November 10, 2014 at 10:03 am | Permalink

        One of the main reasons I plant corn in my home garden is to reap the taste advantage of eating it minutes after it’s been picked, since supposedly the sugars start turning to starch immediately. As a result, I also plant a very sweet variety (Trinity last year, from Johnny’s). Is there a reason that you’re not interested in taking advantage of the new super sweets, and instead opt for the classic variety? What trade-offs am I not considering?

        By the way, I just got Weedless Gardening last week and finished it in a week. Fantastic book, thanks so much for writing it!

        • Posted February 25, 2015 at 12:55 pm | Permalink

          I don’t like the super sweet flavor. I find old fashioned corns to have less sweet but richer flavor.

  7. Tristan
    Posted October 19, 2014 at 2:04 pm | Permalink


    I know you are an advocate of no-till methodology, particularly for preventing activation of weed seeds. It seems inevitable however when planting garlic that soil must be moved to plant the cloves at the proper depth. Any tips from a no-tiller on how best to do this? Should I create small furrows as I usually do, or something else?


    • Posted October 21, 2014 at 11:49 am | Permalink

      Sure, just disturb the soil minimally. A furrow whereby the soil is pushed to the side and then replaced is hardly tillage.

  8. Candace
    Posted November 7, 2014 at 10:40 am | Permalink

    I have planted garlic for 30 years, from New York’s Finger Lakes to Rhode Island,(yes, near your brother’s weed beds…) for love, profit, science and literature. I have never had any damage from frost, winter kill, etc. The only time I have lost garlic is when I did not plant it. I count it, right along with Jerusalem artichokes and Horseradish as one of three crops that cannot fail. I often surprise even myself with the amount at harvest.

  9. JR
    Posted July 25, 2015 at 12:23 pm | Permalink

    I made a simple planter out of a board 48″ long and 7 1/2″ wide with 3″ long 1 1/2″ dowels pieces screwed to it 6″ apart and a handle on the top. I press it into the soil and it makes my holes to plant in 7 bulbs 6″ apart and then by putting the bottom edge of the board against the mark the top edge made in the dirt I get my 7″ row spacings and don’t mess with the soil much. planted about 300 this year that way quickly and easily. Now next year when I have about 2,000 we’ll see how that goes

  10. Marie Duggan
    Posted August 6, 2017 at 3:34 pm | Permalink

    I planted Roy’s Callais Flint corn in NH, and had a good harvest, so I planted a second year. I’m doing this in mounds, not rows. Ok, problem is that the second season the earth was filled with rootworms so that by July the corn was topping over because the roots were weak. I read that the solution is to plant in different places every other year. However, I noticed that the hills where I planted garlic along with the corn were not affected by rootworms. Do you have any no-how about garlic killing root worms? I guess maybe in the modern world the sister plant for corn is garlic. I read that in Abenaki times they did not have these root worms, they are an import.

    • Posted August 10, 2017 at 9:44 am | Permalink

      How aout making it Four Sisters, including garlic in the planting. But corn should e rotated every year, as should other vegetables.

    • Mike
      Posted August 26, 2018 at 1:03 pm | Permalink

      You probably have a nematode problem or a fusarium issue .crop testing will answer your question

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