When to plant cilantro / coriander in Cincinnati
Cilantro / Coriander is cold-hardy, so every date keys off Cincinnati's frost dates of Apr 13.
Step 1 · Sow
Direct sow outdoors
Mar 30 – Apr 20
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 14 – Jun 8
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 14 – Jul 28
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 4 – Sep 29
Maturity window for the second sowing.
Window
Days to maturity
45 – 70 d
Cincinnati's 194-day season leaves this much room.
Cilantro / Coriander 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 cilantro / coriander outdoors in Cincinnati?
Direct-sow around late March (Mar 30–Apr 20) in Cincinnati, based on its local frost dates. Confidence 88%.
When will cilantro / coriander be ready to harvest in Cincinnati?
Expect to harvest from around mid May (May 14–Jun 8) in Cincinnati, based on its local frost dates. Confidence 79%.
Can I plant cilantro / coriander in autumn in Cincinnati?
Yes — Cincinnati supports a second, autumn sowing of cilantro / coriander around mid July (Jul 14–Jul 28), timed to mature before the first fall frost.
How long is the growing season in Cincinnati?
Cincinnati has roughly 194 frost-free days, which is enough time to grow cilantro / coriander to maturity outdoors.
The rule of thumb
Sow cilantro / coriander 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.