When to plant sweet corn in Colorado Springs
Sweet corn is frost-tender, so every date keys off Colorado Springs's last spring frost of May 5.
Step 1 · Sow
Direct sow outdoors
Jun 9 – Jun 30
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Aug 8 – Sep 17
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
Colorado Springs's 153-day season leaves this much room.
Sweet corn on Colorado Springs'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 5
OCT 5
Common questions
When can I sow sweet corn outdoors in Colorado Springs?
Direct-sow around early June (Jun 9–Jun 30) in Colorado Springs, based on its local frost dates. Confidence 85%.
When will sweet corn be ready to harvest in Colorado Springs?
Expect to harvest from around early August (Aug 8–Sep 17) in Colorado Springs, based on its local frost dates. Confidence 79%.
How long is the growing season in Colorado Springs?
Colorado Springs has roughly 153 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 Colorado Springs's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.