When to plant spinach in Colorado Springs
Spinach is cold-hardy, so every date keys off Colorado Springs's frost dates of May 5.
Step 1 · Sow
Direct sow outdoors
Mar 24 – Apr 14
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 3 – May 13
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 26 – Aug 9
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 11 – Sep 21
Maturity window for the second sowing.
Window
Days to maturity
40 – 50 d
Colorado Springs's 153-day season leaves this much room.
Spinach 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
MAY 5
OCT 5
Common questions
When can I sow spinach outdoors in Colorado Springs?
Direct-sow around late March (Mar 24–Apr 14) in Colorado Springs, based on its local frost dates. Confidence 88%.
When will spinach be ready to harvest in Colorado Springs?
Expect to harvest from around early May (May 3–May 13) in Colorado Springs, based on its local frost dates. Confidence 79%.
Can I plant spinach in autumn in Colorado Springs?
Yes — Colorado Springs supports a second, autumn sowing of spinach around late July (Jul 26–Aug 9), timed to mature before the first fall frost.
How long is the growing season in Colorado Springs?
Colorado Springs has roughly 153 frost-free days, which is enough time to grow spinach to maturity outdoors.
The rule of thumb
Sow spinach as soon as the soil is workable — it tolerates cool weather and light frost. 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.