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When to plant Garlic

Computed from land-grant Extension planting-window rules (cited below), localized to real ZIP-level median frost dates, not a single national guess. These are national-generic rules by hardiness class; individual state Extension offices layer their own regional adjustment on top (earlier in the Deep South, later in the Upper Midwest). Enter your ZIP for your own dates, or read the four representative locations below.

Planting windows and crop timing here are computed from USDA/NOAA climate data and the university extension sources cited below, not a site visit or soil test. Treat this as a starting point: local conditions vary, and a local nursery or extension office can advise on your exact site. See our full Disclaimer.

Representative timing, by climate band

When to plant Garlic in four US climates

Each column is the most nursery-dense location in our directory within that USDA zone band, computed from that location's own real median frost dates, not a made-up example.

Stage Zones 1-5 (cold winters)
Fort Plain, NY
Zones 6-7 (temperate)
McMinnville, TN
Zones 8-9 (warm)
Apopka, FL
Zones 10-13 (hot, frost rare or absent)
Loxahatchee, FL
Start seed indoors Not available Not available Not available
Direct-sow outside Not available Not available Not available
Transplant outside Not available Not available Not available
Fall planting Not available Not available Not available
Expected harvest Not available Not available Not available

Zones 10-13 (hot, frost rare or absent) (Loxahatchee, FL): Frost is rare here (about 359 frost-free days a year); most years see little or no hard freeze. This is a hardy crop. In climates like this one, hardy and semi-hardy crops typically go in during the cooler months (fall through late winter), not on a frost-relative schedule.

Garlic goes into the ground in fall, not spring, the opposite calendar from nearly every other crop on this page. NC State Extension's planting calendar (AG-756-01) puts garlic's fall bulb-planting window at September 15 through November 15; Virginia Cooperative Extension (Pub. 426-331) gives its own zone-specific fall windows inside that same span rather than one national date.

This page shows no weeks-before-or-after-frost figure for garlic's planting date, and that is not a missing field, it is the shape of the actual rule. Garlic is planted into cooling soil on purpose: Clemson Cooperative Extension's Onion, Leek, Shallot, & Garlic factsheet states plainly that garlic must be planted in the fall and that onion and garlic are some of the most cold-hardy crops you can grow, which is why this page classifies garlic hardy and why its spring-relative fields are left blank rather than forced into a frost-offset shape the sources never state.

Expect harvest 180 to 210 days after planting, per NC State, nearly all of it spent over winter. A cold-winter climate is, if anything, the setting garlic is built for: the crop needs a real cold period to form properly, which is why it goes in before the first frost rather than after the last one. A mild-winter climate still supports garlic within NC State's and Virginia's fall windows, just with less of a hard freeze during that dormant stretch.

Buy garlic as seed garlic, individual cloves or whole bulbs sold specifically for planting, not the culinary garlic from a grocery produce aisle, which is often treated to slow sprouting. Nurseries typically stock seed garlic in late summer and early fall to match the window above.

Frost hardiness

Hardy. Tolerates hard frost. Can go in the ground before the last frost date.

Days to maturity

180–210

Sourcing notes

Garlic is fall-planted to overwinter and mature the following summer, so the spring-relative fields (sow-indoors/direct-sow/transplant weeks before LAST frost, and weeks before FIRST fall frost) don't apply the same way as for other crops and were left blank rather than forced into that shape. Clemson: "garlic must be planted in the fall...onions and garlic are some of the most cold-hardy crops" - used to assign hardy. Fall planting timing per NCSU (bulbs planted Sept 15-Nov 15) and VCE (zone-specific Sept-Nov windows). DTM (180-210 days) is NCSU's fall-planting-to-harvest figure, not a spring-frost-cycle figure. No min soil temp was found in any source.

Sources