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When to plant winter squash / pumpkin in Kansas City

Winter squash / Pumpkin is frost-tender, so every date keys off Kansas City's last spring frost of Apr 3.
Step 1 · Sow
Start seeds indoors
Mar 25 – Apr 15
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
May 10 – May 31
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 3 – Sep 7
Picking runs until conditions turn against the crop.
Window
Days to maturity
85 – 120 d
Kansas City's 212-day season leaves this much room.
Winter squash / Pumpkin on Kansas City'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
APR 3
OCT 30

Common questions

When can I sow winter squash / pumpkin outdoors in Kansas City?

Direct-sow around early May (May 10–May 31) in Kansas City, based on its local frost dates. Confidence 84%.

When will winter squash / pumpkin be ready to harvest in Kansas City?

Expect to harvest from around early August (Aug 3–Sep 7) in Kansas City, based on its local frost dates. Confidence 78%.

When should I start winter squash / pumpkin seeds indoors in Kansas City?

Start seeds indoors around late March (Mar 25–Apr 15) in Kansas City, based on its local frost dates. Confidence 83%.

When can I transplant winter squash / pumpkin outdoors in Kansas City?

Transplant outdoors around early May (May 10–May 31) in Kansas City, based on its local frost dates. Confidence 84%.

How long is the growing season in Kansas City?

Kansas City has roughly 212 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 Kansas City's frost dates.

Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.
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