When to plant winter squash / pumpkin in Cheyenne
Winter squash / Pumpkin is frost-tender, so every date keys off Cheyenne's last spring frost of May 13.
Step 1 · Sow
Start seeds indoors
May 3 – May 24
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 16 – Jul 7
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 9 – Oct 14
Picking runs until conditions turn against the crop.
Window
Days to maturity
85 – 120 d
Cheyenne's 136-day season leaves this much room.
Winter squash / Pumpkin 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
HARVEST
MAY 13
OCT 2
Common questions
When can I sow winter squash / pumpkin outdoors in Cheyenne?
Direct-sow around mid June (Jun 16–Jul 7) in Cheyenne, based on its local frost dates. Confidence 86%.
When will winter squash / pumpkin be ready to harvest in Cheyenne?
Expect to harvest from around early September (Sep 9–Oct 14) in Cheyenne, based on its local frost dates. Confidence 80%.
When should I start winter squash / pumpkin seeds indoors in Cheyenne?
Start seeds indoors around early May (May 3–May 24) in Cheyenne, based on its local frost dates. Confidence 85%.
When can I transplant winter squash / pumpkin outdoors in Cheyenne?
Transplant outdoors around mid June (Jun 16–Jul 7) 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 winter squash / pumpkin to maturity outdoors.
The rule of thumb
Sow winter squash / pumpkin 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 Cheyenne's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.