When to plant radish in Birmingham
Radish is cold-hardy, so every date keys off Birmingham's frost dates of Mar 27.
Step 1 · Sow
Direct sow outdoors
Feb 27 – Mar 20
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Mar 24 – Mar 29
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 21 – Oct 5
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 23 – Oct 28
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Birmingham's 229-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
MAR 27
NOV 11
Common questions
When can I sow radish outdoors in Birmingham?
Direct-sow around late February (Feb 27–Mar 20) in Birmingham, based on its local frost dates. Confidence 89%.
When will radish be ready to harvest in Birmingham?
Expect to harvest from around late March (Mar 24–Mar 29) in Birmingham, based on its local frost dates. Confidence 80%.
Can I plant radish in autumn in Birmingham?
Yes — Birmingham supports a second, autumn sowing of radish around late September (Sep 21–Oct 5), timed to mature before the first fall frost.
How long is the growing season in Birmingham?
Birmingham has roughly 229 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 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.