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Cooperative Extension: Garden & Yard


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Plant Garlic Now for a Bountiful Harvest Next July!

By Frank Wertheim, University of Maine Cooperative Extension Professor, York County, Maine, frank.wertheim@maine.edu

If you have ever tasted home grown or local farm grown garlic you know it is far superior in flavor to what you can buy in the grocery store. Garlic is an easy crop to grow and planting it in October/early November will ensure you a bountiful harvest this coming July — which will keep you in home grown garlic for the entire year. Get your soil ready and give it a try.

A Word About Garlic: There are basically two types of garlic we use for culinary purposes: Hardneck and Softneck. Both grow well in Maine, but there are differences.

Hardneck: The majority of the garlic grown in the northeast is of the hardneck type, which is so noted for its stiff “neck” or stalk and large cloves. Hardneck produces a scape, which is essentially a flower stock — though usually the flowers abort and produce “bulbils,” which are tiny aerial cloves. These can be saved and planted but will take two years to produce a bulb. If you want to experiment and have a cheap source of increasing your seed stock, give the bulbils a try. Many gardeners cut the scapes off as they develop and use them in stir fries, and some believe that this results in more energy going into the bulb, though research on this is inconclusive. The number of cloves produced from a hardneck bulb are usually few in number (4-8 per bulb), but huge in size. If a large clove is what you are after, you definitely want to grow hardneck varieties. Hardneck varieties don’t store quite as long as softneck, which is why many gardeners plant both types. Good hardneck variety choices for the northeast include German Extra Hardy (a local favorite), Russian Red, Killarney Red, and Montana Giant.

Softneck: Like the name implies, softneck varieties of garlic have a more pliable stalk, produce smaller but numerous cloves per bulb (12-20), do not produce a scape, can be braided for storage, and do store better than the hardneck type. Virtually all of the garlic purchased in grocery stores is of the softneck type. However, it is not recommended to use grocery store bought bulbs for planting as the varieties come from California and China and are not adapted to Maine growing conditions. Also, grocery store garlic may be treated with a sprout inhibitor to lengthen storage life. Good softneck varieties for the northeast include New York White (the local favorite), Artichoke, and Silverskin.

Planting stock: Good sources locally are Fedco-Seeds  and Johnny’s Selected Seed. Another alternative for getting a more economical source of garlic for planting is to purchase it from a local farmers market or farm stand. Locally grown garlic will be of the type hardy for this area and you can ask the farmer which varieties they have, and they won’t be treated with a sprout inhibitor

Soil Preparation: Garlic is best grown in a well drained soil as it won’t tolerate wet feet, and prefers soils high in organic matter. A raised bed would be an ideal location for growing garlic. Be sure and amend the soil with well rotted manure or, preferably, a quality compost. If possible spread 1/2 – 1 inch of compost over the entire planting area and work it into the first few inches of soil. As with most garden crops, garlic grows best when the soil pH is between 6 and 7. If you are not sure what your soil pH is, contact your local University of Maine Cooperative Extension county office for a soil test. There is still time to get a soil test done and work in the proper amount of lime if needed as you prepare the planting bed. If you amend the soil with manure or compost before planting no further fertilizer is needed until spring.

Cultural Practices:  

  • Garlic should be planted between October 1 and November 15 to give the clove a chance to develop some roots before it goes dormant for the winter.
  • Separate cloves from the bulb and plant root side down (pointed side up) about 2 to 4 inches deep, 6 to 8 inches apart in the row, and 12 to 18 inches between rows. A bulb planter used for tulips and daffodils is an excellent tool to get a number of cloves planted quickly.
  • In mid to late November, when the ground begins to freeze, mulch the planting bed with 6 to 12 inches of straw. This step insures the garlic won’t heave with the freezing and thawing of winter and will survive the cold temperatures. Pine needles are also a good source of mulch.
  • In early spring as the ground thaws, look for the green tips beginning to emerge underneath the straw. When they emerge, pull the straw back, but leave it in place between the rows. It will serve to keep the weeds down and the water in.
  • Fertilize in spring with a complete fertilizer such as 10-10-10 (3 lbs. per 100 sq. feet), or an organic complete fertilizer at roughly twice the rate, since they usually contain roughly half the nitrogen as chemical fertilizers.
  • As half of the leaves begin to die back in July, harvest the garlic by gently pulling on the stalk while prying beneath the bulb with a trowel. The clove you planted last fall will have magically turned into a multi-cloved bulb. Gently shake off the dirt, but do not wash before storage. Don’t wait until all the leaves have died-back or your bulbs will not store well.
  • Cure the garlic by hanging in a warm, dry, well ventilated place, such as a barn or attic, or lay them on a sheet of cardboard in the garage. Let them cure for two weeks.
  • Give bulbs a shake after two weeks of curing to remove more soil. Cut off the stalks of hardneck varieties and store them in a cool dry place. For softneck you can leave the stalks attached if you wish to braid and hang them for ease of use and aesthetics in the kitchen, or you may also cut off the stalks and store them with the hardneck varieties.
  • Save some of your biggest bulbs for planting the next fall.
  • Eat and enjoy!

More information on growing garlic, visit Growing Garlic in Minnesota, by University of Minnesota Extension, or Growing Garlic in the Home Garden, by Ohio State University Extension.

Information in this website is provided purely for educational purposes. No responsibility is assumed for any problems associated with the use of products or services mentioned in this website. No endorsement of products or companies is intended, nor is criticism of unnamed products or companies implied.

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Image Description: garlic; photo by Edwin Remsberg


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Contact Information

Cooperative Extension: Garden & Yard
5741 Libby Hall
Orono, Maine 04469-5741
Phone: 207.581.3188, 800.287.0274 (in Maine) or 800.287.8957 (TDD)E-mail: extension@maine.edu
The University of Maine
Orono, Maine 04469
207.581.1110
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