When to plant garlic in Cincinnati
Garlic is cold-hardy, so every date keys off Cincinnati's frost dates of Apr 13.
Step 1 · Sow
Direct sow outdoors
Sep 24 – Oct 15
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 22 – May 22
Picking runs until conditions turn against the crop.
Window
Days to maturity
240 d
Cincinnati's 194-day season leaves this much room.
Garlic on Cincinnati's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
APR 13
OCT 22
Common questions
When can I sow garlic outdoors in Cincinnati?
Direct-sow around late September (Sep 24–Oct 15) in Cincinnati, based on its local frost dates. Confidence 88%.
When will garlic be ready to harvest in Cincinnati?
Expect to harvest from around late May (May 22–May 22) in Cincinnati, based on its local frost dates. Confidence 79%.
How long is the growing season in Cincinnati?
Cincinnati has roughly 194 frost-free days, which is marginal time to grow garlic to maturity outdoors.
The rule of thumb
Sow garlic as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Cincinnati's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.