When to plant tomato in Birmingham
Tomato is frost-tender, so every date keys off Birmingham's last spring frost of Mar 27.
Step 1 · Sow
Start seeds indoors
Feb 28 – Mar 21
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 18 – May 9
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 17 – Jul 12
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 85 d
Birmingham's 229-day season leaves this much room.
Tomato 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 will tomato be ready to harvest in Birmingham?
Expect to harvest from around mid June (Jun 17–Jul 12) in Birmingham, based on its local frost dates. Confidence 80%.
When should I start tomato seeds indoors in Birmingham?
Start seeds indoors around late February (Feb 28–Mar 21) in Birmingham, based on its local frost dates. Confidence 85%.
When can I transplant tomato outdoors in Birmingham?
Transplant outdoors around mid April (Apr 18–May 9) in Birmingham, based on its local frost dates. Confidence 89%.
How long is the growing season in Birmingham?
Birmingham has roughly 229 frost-free days, which is enough time to grow tomato to maturity outdoors.
The rule of thumb
Sow tomato 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. 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.