When to plant turnip in Birmingham
Turnip is cold-hardy, so every date keys off Birmingham's frost dates of Mar 27.
Step 1 · Sow
Direct sow outdoors
Mar 6 – Mar 27
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 15 – Apr 30
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 27 – Sep 10
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 13 – Oct 28
Maturity window for the second sowing.
Window
Days to maturity
40 – 55 d
Birmingham's 229-day season leaves this much room.
Turnip 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 turnip outdoors in Birmingham?
Direct-sow around early March (Mar 6–Mar 27) in Birmingham, based on its local frost dates. Confidence 89%.
When will turnip be ready to harvest in Birmingham?
Expect to harvest from around mid April (Apr 15–Apr 30) in Birmingham, based on its local frost dates. Confidence 80%.
Can I plant turnip in autumn in Birmingham?
Yes — Birmingham supports a second, autumn sowing of turnip around late August (Aug 27–Sep 10), 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 turnip to maturity outdoors.
The rule of thumb
Sow turnip 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.