When to plant cabbage in Hamburg
Cabbage is cold-hardy, so every date keys off Hamburg's frost dates of Apr 25.
Step 1 · Sow
Start seeds indoors
Mar 14 – Apr 4
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 4 – Apr 25
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 13 – Jul 13
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 27 – Jul 11
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 12 – Oct 12
Maturity window for the second sowing.
Window
Days to maturity
70 – 100 d
Hamburg's 185-day season leaves this much room.
Cabbage on Hamburg'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 25
OCT 26
Common questions
When will cabbage be ready to harvest in Hamburg?
Expect to harvest from around mid June (Jun 13–Jul 13) in Hamburg, based on its local frost dates. Confidence 80%.
When should I start cabbage seeds indoors in Hamburg?
Start seeds indoors around mid March (Mar 14–Apr 4) in Hamburg, based on its local frost dates. Confidence 85%.
When can I transplant cabbage outdoors in Hamburg?
Transplant outdoors around early April (Apr 4–Apr 25) in Hamburg, based on its local frost dates. Confidence 89%.
Can I plant cabbage in autumn in Hamburg?
Yes — Hamburg supports a second, autumn sowing of cabbage around late June (Jun 27–Jul 11), timed to mature before the first fall frost.
How long is the growing season in Hamburg?
Hamburg has roughly 185 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 Hamburg's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.