When to plant sweet corn in Bristol
Sweet corn is frost-tender, so every date keys off Bristol's last spring frost of Apr 18.
Step 1 · Sow
Direct sow outdoors
Apr 25 – May 16
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jun 24 – Aug 3
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
Bristol's 197-day season leaves this much room.
Sweet corn on Bristol'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
HARVEST
APR 18
NOV 1
Common questions
When can I sow sweet corn outdoors in Bristol?
Direct-sow around late April (Apr 25–May 16) in Bristol, based on its local frost dates. Confidence 82%.
When will sweet corn be ready to harvest in Bristol?
Expect to harvest from around late June (Jun 24–Aug 3) in Bristol, based on its local frost dates. Confidence 74%.
How long is the growing season in Bristol?
Bristol has roughly 197 frost-free days, which is enough time to grow sweet corn to maturity outdoors.
The rule of thumb
Sow sweet corn 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 Bristol's frost dates.
Confidence 82/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.