When to plant radish in Frankfurt
Radish is cold-hardy, so every date keys off Frankfurt's frost dates of Mar 30.
Step 1 · Sow
Direct sow outdoors
Mar 8 – Mar 29
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 2 – Apr 7
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 25 – Oct 9
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 27 – Nov 1
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Frankfurt's 230-day season leaves this much room.
Radish on Frankfurt'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 30
NOV 15
Common questions
When can I sow radish outdoors in Frankfurt?
Direct-sow around early March (Mar 8–Mar 29) in Frankfurt, based on its local frost dates. Confidence 86%.
When will radish be ready to harvest in Frankfurt?
Expect to harvest from around early April (Apr 2–Apr 7) in Frankfurt, based on its local frost dates. Confidence 80%.
Can I plant radish in autumn in Frankfurt?
Yes — Frankfurt supports a second, autumn sowing of radish around late September (Sep 25–Oct 9), timed to mature before the first fall frost.
How long is the growing season in Frankfurt?
Frankfurt has roughly 230 frost-free days, which is enough time to grow radish to maturity outdoors.
The rule of thumb
Sow radish 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 Frankfurt's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.