Missouri · zones 5b–7a
When to plant garlic in Missouri.
Missouri's window for garlic runs on the fall side of the season. A second, fall sowing fits Oct 20 to Nov 4. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Garlic dates for a typical Missouri season.
Fall round
Oct 20 to Nov 4
Counted back from the ~Oct 20 first frost.
Harvest
~240 days later
~0.2 lb per plant over ~1 weeks.
Missouri spans more than one climate: Zone 6 is the most common zone, but the state runs 5b to 7a. That's why the planner works from your ZIP code's frost dates, not your zone: mountain and coastal gardens in the same state can be three weeks apart.
Missouri growing notes
Missouri garlic is easy to grow and easy to ruin in the curing shed.
Zone 6 lets you grow either kind
Missouri's zone 6 winters sit right in the overlap where both hardneck and softneck garlic thrive, which is not true everywhere. Hardnecks like Music and German White still get the 6 to 8 weeks below 40 degrees they need to divide into cloves, since Missouri winters reliably deliver that even in the warmer southern counties, and they throw a scape in late spring that is worth eating on its own. Softnecks such as Inchelium Red do just as well and reward you with 2 to 3 extra months of storage life, which matters more here than in colder states because Missouri's early warm spring shortens the safe storage window on the other end.
Plant cloves in fall with the pointed tip facing up, set 2 inches down and spaced 6 inches apart in the row, timed 4 to 6 weeks before the ground typically freezes hard, since a clove tucked in too close to a hard freeze never gets enough time to establish roots before winter shuts the bed down. On Ozark chert ground, work the bed 10 inches deep with compost first, since a rocky, compacted planting hole is the single most common reason Missouri garlic comes up lopsided; river-bottom loam in the Bootheel or Missouri River valley needs none of that extra work.
The curing problem drier states never have
Dry-climate states cure garlic outdoors in open air and call it done. Missouri cannot do that: a Missouri summer runs humid enough that garlic hung in an open carport can still mold before the wrappers finish tightening, especially in a wet year, and downy mildew, one of the pests this crop shares with the state's onions, thrives in exactly that same damp air while the bulbs are still in the ground.
Cure indoors instead, in a garage or covered porch with a box fan running continuously and the bulbs spread in a single layer, never stacked. Check daily for the first week; any bulb that feels soft or shows blue-green mold gets pulled from the batch immediately, because Missouri's humidity lets mold jump from one bulb to its neighbors within days. Given clean airflow, full curing still takes the same 2 to 3 weeks as anywhere else; the difference is entirely in where you do it.
Dig on leaf color, not the calendar
Missouri garlic is ready to dig when the bottom 3 to 4 leaves have browned back but the top 5 or so are still green, generally after a roughly 240-day journey from fall planting to summer harvest. Waiting for full collapse costs you: Missouri's humid ground rots bulbs left in place past that point, and wrapper layers that have already started to shred in wet soil will not hold up to 3 months of storage.
Lift a test bulb first with a garden fork rather than pulling by the stalk, which can snap the neck and let bacteria in through the wound. A well-cured Music or German White typically holds 4 to 6 months in a cool, dark spot; Inchelium Red and other softnecks stretch closer to 8, which is the whole reason to grow both in a state where the growing season is generous but the curing window is not.
In Missouri: watch for
The pests that find garlic here.
A middle-length season, about 188 frost-free days, means garlic overlaps onion thrips for a stretch each summer. Check plants every week or two and treat early.
Silvery streaks and curled leaf tips in hot spells.
Organic fix: Insecticidal soap or neem; hang sticky traps.
Seedlings wilt; white maggots in the bulb base.
Organic fix: Float a row cover over the row; rotate beds each year.
Pale patches with fuzzy gray growth in damp weather.
Organic fix: Space for airflow, water early in the day, spray neem.
White rot
Yellowing and dieback, then wilt; fluffy white mold at the bulb base and roots so rotted the plant lifts straight out.
Organic fix: No cure once it is in the soil. Plant clean stock, never follow onions with onions, and keep infested soil off tools and boots.
Your season math: Missouri gives garlic about 188 frost-free days, and it needs roughly 240 days to a first harvest. It's a one-planting crop, so time that single sowing well.
Planting garlic in Missouri: questions
When should I plant garlic in Missouri?+
Missouri's window for garlic is in fall: Oct 20 to Nov 4, keyed to the first fall frost around Oct 20.
What USDA zone is Missouri?+
Missouri spans zones 5b–7a, mostly zone 6. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many garlic plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.