Crop guide
Growing garlic
Growing garlic means matching type, timing, and spacing on the cited sheets and recording the bed. There is no single national planting date.
Growing guidance is general information. Timing, spacing, and care depend on cultivar, weather, soil, and local conditions. Check the sources and adjust the plan for your garden.
Steps (range, not a promise)
- 01Know the type on the cited sheet. Size notes stay source-specific.
- 02Plant cloves on the cited sheet’s timing. Regional dates stay on their own cards.
- 03Use in-row depth and spacing from one cited source.
- 04Log the bed so next season is not a guess.
Illustrative photograph — types, timing, and spacing stay on the cited sheets.
The season, on your ground
Save this bed — freeWhat the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1314 (South Carolina)
Allium sativum. About 10 cloves. Fall plant. Larger outer cloves 3–5 in, upright, cover ~1 in. Rows 12–24 in. Wide row 3–4 in.
Details and limits (4)
Types
Clemson HGIC 1314 (South Carolina): garlic (Allium sativum) differs from onion in that its bulb is composed of about 10 cloves arranged inside a papery bulb cover. Type notes on their sheet — not a cultivar mill.
Timing
Clemson HGIC 1314 (South Carolina): garlic is planted in the fall. Plant early enough in the season because vegetative growth ceases when the bulb develops in response to longer days and warmer temperatures in the spring. Timing on their sheet — not a national plant date.
Spacing
Clemson HGIC 1314 (South Carolina): plant the larger outer cloves 3 to 5 inches apart in an upright position, and cover them to a depth of about 1 inch. Allow 12 to 24 inches between rows. Garlic grows well in a wide row system of planting, spacing cloves 3 to 4 inches apart in rows a foot wide. Spacing on their sheet — not a BioArva average.
Limit
South Carolina HGIC 1314. Fall timing and 3–5 in spacing stay on this sheet. Not fertilizer and not a cultivar mill.
Maryland Extension (Maryland)
Soft-neck and hard-neck. Elephant garlic is a leek. Mid–late October. DTM 250–270. 5 in furrow; cover 1–2 in; 3–6 in in-row.
Details and limits (4)
Types
Maryland Extension (Maryland): two types usually grown in home gardens — soft-neck and hard-neck (top-setting). Elephant garlic is actually a form of leek that forms large cloves resembling garlic. Type notes on their sheet — not a cultivar mill.
Timing
Maryland Extension (Maryland): hardy perennial that can tolerate Maryland winters; treated as an annual crop. Plant individual cloves mid–late October. Days to maturity 250 to 270 from a fall planting. Maryland timing — not a national plant date.
Spacing
Maryland Extension (Maryland): dig a 5-inch deep furrow. Plant cloves bottom-side down and pointy tip-up. Each clove should be covered with 1 to 2 inches of soil. Spacing 3 to 6 inches apart in the row; double- or triple-wide rows. Spacing on their sheet — not a BioArva average.
Limit
Maryland garlic garden page. October timing and 3–6 in spacing stay on this sheet. Not fertilizer and not a clove offer.
UMN Extension (Minnesota)
Hardneck: Rocambole, Purple Stripe, Porcelain. Softneck: Artichoke, Silverskin. Elephant garlic is a leek. Fall, 1–2 weeks after first killing frost. Double rows 6 in; beds 30 in; base 2–3 in.
Details and limits (4)
Types
UMN Extension (Minnesota): common hardneck types are Rocambole, Purple Stripe and Porcelain. Softneck types include Artichoke and Silverskin. Elephant garlic is a type of leek, not a true garlic. Type notes on their sheet — not a cultivar mill.
Timing
UMN Extension (Minnesota): plant cloves in the fall, usually one or two weeks after the first killing frost. Minnesota timing — not a national plant date.
Spacing
UMN Extension (Minnesota): plant cloves in double rows, six inches apart. Center the rows on beds, 30 inches apart. Plant cloves pointed side up, with the base of the clove two to three inches from the soil surface. Spacing on their sheet — not a BioArva average.
Limit
Minnesota garlic sheet. Frost-week timing and 6-inch rows stay Minnesota. Not fertilizer.
Illinois Extension (Illinois)
Hardneck (flower stalks) and softneck (no seed stalk). Fall, usually 1–2 weeks after first killing frost. Cold treatment. Cloves about 2–3 in deep.
Details and limits (4)
Types
Illinois Extension (Illinois): two types of garlic — hardneck and softneck. Hardneck varieties produce flower stalks. Softneck varieties do not produce a seed stalk. Type notes on their sheet — not a cultivar mill.
Timing
Illinois Extension (Illinois): garlic should be planted in the fall usually within one to two weeks after the first killing frost. Optimum shoot and bulb formation requires a cold treatment. Illinois timing — not a national plant date.
Spacing
Illinois Extension (Illinois): plant the cloves about 2 to 3 inches deep. Spacing on their sheet — not a BioArva average.
Limit
Illinois garlic page. Frost-week timing and 2–3 in depth stay Illinois. Not fertilizer.
Make it yours
Save the bed in the Field Book so next season is not a guess.
Sources differ
When do you plant garlic?
Compare timing on the cited sheets. Clemson HGIC 1314 (South Carolina): planted in the fall. Maryland: mid–late October. Minnesota: fall, usually one or two weeks after the first killing frost. Illinois: fall, usually within one to two weeks after the first killing frost. Not a national plant date.
How far apart do you plant garlic?
The sheets do not agree on one grid. Clemson: 3 to 5 inches, cover about 1 inch, rows 12 to 24 inches. Maryland: 3 to 6 inches in the row; cover 1 to 2 inches. Minnesota: double rows six inches apart; beds 30 inches; clove base two to three inches from the surface. Illinois: about two to three inches deep.
What to record in the Field Book
Save the bed with the crop and the date. You may add a photo and notes. Compare entries you have recorded with each other — not with a diagnosis from this page. If you want an identification, bring the record to local Extension.
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How we know — methodology. Ranges and assertions are cited per source, not blended.