When to plant leek in Bristol
Leek is cold-hardy, so every date keys off Bristol's frost dates of Apr 12.
Step 1 · Sow
Start seeds indoors
Feb 1 – Feb 22
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 29 – Apr 19
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 7 – Jul 27
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Bristol's 204-day season leaves this much room.
Leek 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
APR 12
NOV 11
Common questions
When will leek be ready to harvest in Bristol?
Expect to harvest from around early July (Jul 7–Jul 27) in Bristol, based on its local frost dates. Confidence 75%.
When should I start leek seeds indoors in Bristol?
Start seeds indoors around early February (Feb 1–Feb 22) in Bristol, based on its local frost dates. Confidence 79%.
When can I transplant leek outdoors in Bristol?
Transplant outdoors around late March (Mar 29–Apr 19) in Bristol, based on its local frost dates. Confidence 83%.
How long is the growing season in Bristol?
Bristol has roughly 204 frost-free days, which is enough time to grow leek to maturity outdoors.
The rule of thumb
Sow leek 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 Bristol's frost dates.
Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.