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When to plant swiss chard in Cincinnati

Swiss chard is cold-hardy, so every date keys off Cincinnati's frost dates of Apr 13.
Step 1 · Sow
Start seeds indoors
Mar 16 – Apr 6
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 30 – Apr 20
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 19 – May 29
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 24 – Aug 7
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 19 – Sep 29
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Cincinnati's 194-day season leaves this much room.
Swiss chard on Cincinnati'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
APR 13
OCT 22

Common questions

When can I sow swiss chard outdoors in Cincinnati?

Direct-sow around late March (Mar 30–Apr 20) in Cincinnati, based on its local frost dates. Confidence 88%.

When will swiss chard be ready to harvest in Cincinnati?

Expect to harvest from around mid May (May 19–May 29) in Cincinnati, based on its local frost dates. Confidence 79%.

When should I start swiss chard seeds indoors in Cincinnati?

Start seeds indoors around mid March (Mar 16–Apr 6) in Cincinnati, based on its local frost dates. Confidence 84%.

When can I transplant swiss chard outdoors in Cincinnati?

Transplant outdoors around late March (Mar 30–Apr 20) in Cincinnati, based on its local frost dates. Confidence 88%.

Can I plant swiss chard in autumn in Cincinnati?

Yes — Cincinnati supports a second, autumn sowing of swiss chard around late July (Jul 24–Aug 7), timed to mature before the first fall frost.

How long is the growing season in Cincinnati?

Cincinnati has roughly 194 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 Cincinnati'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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