Garlic Planting Dates by Zone: Your October and November Window

September 04, 2026

Why Garlic Timing Is Different From Every Other Fall Crop

Garlic is not a fall harvest crop. It is a fall-planted, next-summer harvest crop, and that single fact drives every date on this page. Cloves need six to eight weeks of root growth before the ground locks up, followed by a real cold period to trigger bulb division. Plant too early and top growth gets tall enough to winterkill. Plant too late and the clove never roots in before frost, which means a weak bulb or no bulb at all next July.

The two numbers that matter are your average first frost date and soil temperature at 4 inches deep. Garlic roots want soil in the 50 to 60°F range at planting and stop actively rooting once soil drops below roughly 40°F. Everything in the table below is built backward from those two inputs, zone by zone.

If you garden in zone 7 and want the full month-by-month calendar for your region, not just garlic, the Southeast Vegetable Gardening guide covers every crop from first frost through spring transplant.

Garlic Planting Dates by Zone: The Full Table (Zones 3-10)

Use your average first frost date as the anchor, then check soil temperature before committing to a planting day. A warm September pushes these windows later; an early cold snap pushes them earlier.

Zone	Planting Window	Soil Temp Target (4”)	Garlic Type
3	Sept 15 - Oct 1	55-60°F	Hardneck only
4	Sept 20 - Oct 10	55-60°F	Hardneck only
5	Oct 1 - Oct 20	50-58°F	Hardneck
6	Oct 10 - Oct 31	50-55°F	Hardneck, softneck
7	Oct 15 - Nov 15	50-55°F	Hardneck, softneck
8	Nov 1 - Dec 1	45-55°F	Softneck preferred
9	Nov 15 - Dec 15	45-50°F	Softneck, pre-chill
10	Dec 1 - Jan 1	45-50°F	Softneck, pre-chill

Zones 9 and 10 are the exception to “plant by frost date,” since a hard frost may never come. There, garlic is timed to winter’s short-day, low-light window instead, and cloves need 6 to 8 weeks of artificial cold (a refrigerator crisper works) before they go in the ground.

For the ultra-short-season end of this table, the site’s garlic zone-by-zone primer has more detail on why zones 3 and 4 plant a week or two before everyone else.

Zone 7 Garlic: The October to November Window in Detail

Zone 7 splits into 7a and 7b, and garlic is one of the few crops where that split actually changes the calendar by more than a few days. In 7a, aim for the first half of the window: October 15 through the end of the month, while soil is still holding in the 50-55°F range. In 7b, the milder half of the zone, gardeners can push into early-to-mid November without losing rooting time, since the ground stays workable longer.

Both hardneck and softneck do well in zone 7, which is unusual. North of zone 6, softneck struggles to get enough winter chill to divide properly. South of zone 8, hardneck often bolts scapes too early and produces small bulbs. Zone 7 sits in the overlap, so the choice comes down to storage life over cold tolerance: softneck stores 8 to 10 months, hardneck stores 4 to 6.

Mulch depth in zone 7 should run 4 to 6 inches of straw, applied after the first hard frost rather than at planting. Mulching too early traps warmth and delays the dormancy signal cloves need.

For the rest of the zone 7 growing calendar, planting depth for other crops, spring transplant dates, and frost timing, see Zone 7a and Zone 7b.

Hardneck vs. Softneck: Matching Garlic Type to Your Zone

Hardneck garlic (Rocambole, Porcelain, Purple Stripe) needs a genuine cold winter to divide into cloves. It is the only reliable choice in zones 3 through 5, where winter cold is not in question. It produces a flowering scape in early summer, which should be cut to redirect energy into the bulb, and it stores for a shorter window after harvest.

Softneck garlic (Artichoke and Silverskin types) needs less winter chill and tolerates zones 7 through 10 without extra steps. It does not produce a scape, braids well for storage, and is the type sold in most grocery stores. In zones 9 and 10, softneck cloves need pre-chilling in a refrigerator for 6 to 8 weeks before planting to simulate the cold they would not otherwise get.

Zone 6 and 7 gardeners can grow both and compare, since neither type is fighting the climate in that middle band. Garlic planted from a mixed hardneck and softneck order gives a longer harvest and storage window than committing to one type.

Planting Depth, Spacing, and Mulch by Climate

Plant individual cloves, pointed end up, 2 inches deep and 4 to 6 inches apart, in rows spaced 12 inches apart. Break the bulb into cloves right before planting, not weeks ahead: separated cloves lose moisture fast and germinate poorly if they sit exposed.

Mulch timing depends on your zone’s soil temperature curve. In zones 3 through 6, apply 4 to 6 inches of straw mulch once the soil has cooled but before the ground freezes solid, to insulate roots through winter. In zones 7 and 8, hold off until after the first hard frost so the cold signal still reaches the clove. In zones 9 and 10, a lighter 2 to 3 inch mulch is enough since freeze protection is not the goal, moisture retention is.

Check first frost timing for your specific zone before finalizing a mulch date. The first frost date by zone reference lists average dates so mulch goes down at the right point in the cycle rather than on a guess.

---