When to plant leek in Cheyenne
Leek is cold-hardy, so every date keys off Cheyenne's frost dates of May 13.
Step 1 · Sow
Start seeds indoors
Mar 4 – Mar 25
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 3 – May 24
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 11 – Aug 31
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Cheyenne's 136-day season leaves this much room.
Leek on Cheyenne'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 13
OCT 2
Common questions
When will leek be ready to harvest in Cheyenne?
Expect to harvest from around mid August (Aug 11–Aug 31) in Cheyenne, based on its local frost dates. Confidence 80%.
When should I start leek seeds indoors in Cheyenne?
Start seeds indoors around early March (Mar 4–Mar 25) in Cheyenne, based on its local frost dates. Confidence 85%.
When can I transplant leek outdoors in Cheyenne?
Transplant outdoors around early May (May 3–May 24) in Cheyenne, based on its local frost dates. Confidence 86%.
How long is the growing season in Cheyenne?
Cheyenne has roughly 136 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 Cheyenne's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.