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When to plant swiss chard in Colorado Springs

Swiss chard is cold-hardy, so every date keys off Colorado Springs's frost dates of May 5.
Step 1 · Sow
Start seeds indoors
Apr 7 – Apr 28
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 21 – May 12
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 10 – Jun 20
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 25 – Jul 9
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Aug 21 – Aug 31
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Colorado Springs's 153-day season leaves this much room.
Swiss chard 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 swiss chard outdoors in Colorado Springs?

Direct-sow around late April (Apr 21–May 12) in Colorado Springs, based on its local frost dates. Confidence 88%.

When will swiss chard be ready to harvest in Colorado Springs?

Expect to harvest from around early June (Jun 10–Jun 20) in Colorado Springs, based on its local frost dates. Confidence 79%.

When should I start swiss chard seeds indoors in Colorado Springs?

Start seeds indoors around early April (Apr 7–Apr 28) in Colorado Springs, based on its local frost dates. Confidence 84%.

When can I transplant swiss chard outdoors in Colorado Springs?

Transplant outdoors around late April (Apr 21–May 12) in Colorado Springs, based on its local frost dates. Confidence 88%.

Can I plant swiss chard in autumn in Colorado Springs?

Yes — Colorado Springs supports a second, autumn sowing of swiss chard around late June (Jun 25–Jul 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 swiss chard to maturity outdoors.

The rule of thumb

Sow swiss chard 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.
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