When to plant cilantro / coriander in Milwaukee
Cilantro / Coriander is cold-hardy, so every date keys off Milwaukee's frost dates of Apr 23.
Step 1 · Sow
Direct sow outdoors
Apr 22 – May 13
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jun 6 – Jul 1
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 7 – Jul 21
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Aug 28 – Sep 22
Maturity window for the second sowing.
Window
Days to maturity
45 – 70 d
Milwaukee's 182-day season leaves this much room.
Cilantro / Coriander on Milwaukee'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 23
OCT 23
Common questions
When can I sow cilantro / coriander outdoors in Milwaukee?
Direct-sow around late April (Apr 22–May 13) in Milwaukee, based on its local frost dates. Confidence 86%.
When will cilantro / coriander be ready to harvest in Milwaukee?
Expect to harvest from around early June (Jun 6–Jul 1) in Milwaukee, based on its local frost dates. Confidence 80%.
Can I plant cilantro / coriander in autumn in Milwaukee?
Yes — Milwaukee supports a second, autumn sowing of cilantro / coriander around early July (Jul 7–Jul 21), timed to mature before the first fall frost.
How long is the growing season in Milwaukee?
Milwaukee has roughly 182 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 Milwaukee's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.