When to plant cucumber in Colorado Springs

Cucumber is frost-tender, so every date keys off Colorado Springs's last spring frost of May 5.
Step 1 · Sow
Start seeds indoors
Apr 29 – May 20
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 9 – Jun 30
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 29 – Aug 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 70 d
Colorado Springs's 153-day season leaves this much room.
Cucumber 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
MAY 5
OCT 5

Common questions

When can I sow cucumber 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 cucumber be ready to harvest in Colorado Springs?

Expect to harvest from around late July (Jul 29–Aug 18) in Colorado Springs, based on its local frost dates. Confidence 79%.

When should I start cucumber seeds indoors in Colorado Springs?

Start seeds indoors around late April (Apr 29–May 20) in Colorado Springs, based on its local frost dates. Confidence 84%.

When can I transplant cucumber outdoors in Colorado Springs?

Transplant outdoors around early June (Jun 9–Jun 30) in Colorado Springs, based on its local frost dates. Confidence 85%.

How long is the growing season in Colorado Springs?

Colorado Springs has roughly 153 frost-free days, which is enough time to grow cucumber to maturity outdoors.

The rule of thumb

Sow cucumber 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.