When to plant cabbage in Cologne
Cabbage is cold-hardy, so every date keys off Cologne's frost dates of Mar 26.
Step 1 · Sow
Start seeds indoors
Feb 12 – Mar 5
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 5 – Mar 26
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 14 – Jun 13
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 19 – Aug 2
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 4 – Nov 3
Maturity window for the second sowing.
Window
Days to maturity
70 – 100 d
Cologne's 238-day season leaves this much room.
Cabbage on Cologne'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 17
Common questions
When will cabbage be ready to harvest in Cologne?
Expect to harvest from around mid May (May 14–Jun 13) in Cologne, based on its local frost dates. Confidence 80%.
When should I start cabbage seeds indoors in Cologne?
Start seeds indoors around mid February (Feb 12–Mar 5) in Cologne, based on its local frost dates. Confidence 85%.
When can I transplant cabbage outdoors in Cologne?
Transplant outdoors around early March (Mar 5–Mar 26) in Cologne, based on its local frost dates. Confidence 89%.
Can I plant cabbage in autumn in Cologne?
Yes — Cologne supports a second, autumn sowing of cabbage around mid July (Jul 19–Aug 2), timed to mature before the first fall frost.
How long is the growing season in Cologne?
Cologne has roughly 238 frost-free days, which is enough time to grow cabbage to maturity outdoors.
The rule of thumb
Sow cabbage 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 Cologne's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.