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When to plant swiss chard in Corpus Christi

Swiss chard is cold-hardy, so every date keys off Corpus Christi's frost dates of Feb 2.
Step 1 · Sow
Start seeds indoors
Jan 5 – Jan 26
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Dec 25 – Jan 15
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Feb 13 – Feb 23
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Sep 3 – Sep 17
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 30 – Nov 9
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Corpus Christi's 314-day season leaves this much room.
Swiss chard on Corpus Christi'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
FEB 2
DEC 13

Common questions

When can I sow swiss chard outdoors in Corpus Christi?

Direct-sow around late December (Dec 25–Jan 15) in Corpus Christi, based on its local frost dates. Confidence 81%.

When will swiss chard be ready to harvest in Corpus Christi?

Expect to harvest from around mid February (Feb 13–Feb 23) in Corpus Christi, based on its local frost dates. Confidence 75%.

When should I start swiss chard seeds indoors in Corpus Christi?

Start seeds indoors around early January (Jan 5–Jan 26) in Corpus Christi, based on its local frost dates. Confidence 79%.

When can I transplant swiss chard outdoors in Corpus Christi?

Transplant outdoors around late December (Dec 25–Jan 15) in Corpus Christi, based on its local frost dates. Confidence 81%.

Can I plant swiss chard in autumn in Corpus Christi?

Yes — Corpus Christi supports a second, autumn sowing of swiss chard around early September (Sep 3–Sep 17), timed to mature before the first fall frost.

How long is the growing season in Corpus Christi?

Corpus Christi has roughly 314 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 Corpus Christi's frost dates.

Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.
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