When to plant sweet corn in Kansas City
Sweet corn is frost-tender, so every date keys off Kansas City's last spring frost of Apr 3.
Step 1 · Sow
Direct sow outdoors
May 10 – May 31
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jul 9 – Aug 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
Kansas City's 212-day season leaves this much room.
Sweet corn 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
FROST
FROST
HARVEST
APR 3
OCT 30
Common questions
When can I sow sweet corn 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 sweet corn be ready to harvest in Kansas City?
Expect to harvest from around early July (Jul 9–Aug 18) in Kansas City, based on its local frost dates. Confidence 78%.
How long is the growing season in Kansas City?
Kansas City has roughly 212 frost-free days, which is enough time to grow sweet corn to maturity outdoors.
The rule of thumb
Sow sweet corn 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.