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When to plant swiss chard in Huntsville

Swiss chard is cold-hardy, so every date keys off Huntsville's frost dates of Mar 27.
Step 1 · Sow
Start seeds indoors
Feb 27 – Mar 20
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 13 – Apr 3
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 2 – May 12
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Aug 6 – Aug 20
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 2 – Oct 12
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Huntsville's 228-day season leaves this much room.
Swiss chard on Huntsville'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
MAR 27
NOV 4

Common questions

When can I sow swiss chard outdoors in Huntsville?

Direct-sow around mid March (Mar 13–Apr 3) in Huntsville, based on its local frost dates. Confidence 88%.

When will swiss chard be ready to harvest in Huntsville?

Expect to harvest from around early May (May 2–May 12) in Huntsville, based on its local frost dates. Confidence 79%.

When should I start swiss chard seeds indoors in Huntsville?

Start seeds indoors around late February (Feb 27–Mar 20) in Huntsville, based on its local frost dates. Confidence 84%.

When can I transplant swiss chard outdoors in Huntsville?

Transplant outdoors around mid March (Mar 13–Apr 3) in Huntsville, based on its local frost dates. Confidence 88%.

Can I plant swiss chard in autumn in Huntsville?

Yes — Huntsville supports a second, autumn sowing of swiss chard around early August (Aug 6–Aug 20), timed to mature before the first fall frost.

How long is the growing season in Huntsville?

Huntsville has roughly 228 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 Huntsville'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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