When to plant cilantro / coriander in Lyon
Cilantro / Coriander is cold-hardy, so every date keys off Lyon's frost dates of Mar 26.
Step 1 · Sow
Direct sow outdoors
Mar 12 – Apr 2
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 26 – May 21
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 24 – Aug 7
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 14 – Oct 9
Maturity window for the second sowing.
Window
Days to maturity
45 – 70 d
Lyon's 232-day season leaves this much room.
Cilantro / Coriander on Lyon'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
MAR 26
NOV 16
Common questions
When can I sow cilantro / coriander outdoors in Lyon?
Direct-sow around mid March (Mar 12–Apr 2) in Lyon, based on its local frost dates. Confidence 87%.
When will cilantro / coriander be ready to harvest in Lyon?
Expect to harvest from around late April (Apr 26–May 21) in Lyon, based on its local frost dates. Confidence 78%.
Can I plant cilantro / coriander in autumn in Lyon?
Yes — Lyon supports a second, autumn sowing of cilantro / coriander around late July (Jul 24–Aug 7), timed to mature before the first fall frost.
How long is the growing season in Lyon?
Lyon has roughly 232 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 Lyon's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.