When to plant radish in Birmingham
Radish is cold-hardy, so every date keys off Birmingham's frost dates of Apr 17.
Step 1 · Sow
Direct sow outdoors
Mar 20 – Apr 10
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 14 – Apr 19
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 17 – Oct 1
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 19 – Oct 24
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Birmingham's 204-day season leaves this much room.
Radish on Birmingham'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 17
NOV 7
Common questions
When can I sow radish outdoors in Birmingham?
Direct-sow around mid March (Mar 20–Apr 10) in Birmingham, based on its local frost dates. Confidence 88%.
When will radish be ready to harvest in Birmingham?
Expect to harvest from around mid April (Apr 14–Apr 19) in Birmingham, based on its local frost dates. Confidence 79%.
Can I plant radish in autumn in Birmingham?
Yes — Birmingham supports a second, autumn sowing of radish around mid September (Sep 17–Oct 1), timed to mature before the first fall frost.
How long is the growing season in Birmingham?
Birmingham has roughly 204 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 Birmingham's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.