When to plant kale in Strasbourg

Kale is cold-hardy, so every date keys off Strasbourg's frost dates of Apr 9.
Step 1 · Sow
Start seeds indoors
Feb 26 – Mar 19
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 19 – Apr 9
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 13 – Jun 2
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 26 – Aug 9
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 26 – Oct 16
Maturity window for the second sowing.
Window
Days to maturity
55 – 75 d
Strasbourg's 206-day season leaves this much room.
Kale on Strasbourg'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
APR 9
OCT 30

Common questions

When can I sow kale outdoors in Strasbourg?

Direct-sow around mid March (Mar 19–Apr 9) in Strasbourg, based on its local frost dates. Confidence 89%.

When will kale be ready to harvest in Strasbourg?

Expect to harvest from around mid May (May 13–Jun 2) in Strasbourg, based on its local frost dates. Confidence 80%.

When should I start kale seeds indoors in Strasbourg?

Start seeds indoors around late February (Feb 26–Mar 19) in Strasbourg, based on its local frost dates. Confidence 85%.

When can I transplant kale outdoors in Strasbourg?

Transplant outdoors around mid March (Mar 19–Apr 9) in Strasbourg, based on its local frost dates. Confidence 89%.

Can I plant kale in autumn in Strasbourg?

Yes — Strasbourg supports a second, autumn sowing of kale around late July (Jul 26–Aug 9), timed to mature before the first fall frost.

How long is the growing season in Strasbourg?

Strasbourg has roughly 206 frost-free days, which is enough time to grow kale to maturity outdoors.

The rule of thumb

Sow kale 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 Strasbourg's frost dates.

Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.