When to plant leek in Winnipeg
Leek is cold-hardy, so every date keys off Winnipeg's frost dates of May 8.
Step 1 · Sow
Start seeds indoors
Feb 27 – Mar 20
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 30 – May 21
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 8 – Aug 28
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Winnipeg's 154-day season leaves this much room.
Leek on Winnipeg'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
MAY 8
OCT 10
Common questions
When will leek be ready to harvest in Winnipeg?
Expect to harvest from around early August (Aug 8–Aug 28) in Winnipeg, based on its local frost dates. Confidence 76%.
When should I start leek seeds indoors in Winnipeg?
Start seeds indoors around late February (Feb 27–Mar 20) in Winnipeg, based on its local frost dates. Confidence 80%.
When can I transplant leek outdoors in Winnipeg?
Transplant outdoors around late April (Apr 30–May 21) in Winnipeg, based on its local frost dates. Confidence 81%.
How long is the growing season in Winnipeg?
Winnipeg has roughly 154 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 Winnipeg's frost dates.
Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.