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When to plant swiss chard in Indianapolis

Swiss chard is cold-hardy, so every date keys off Indianapolis's frost dates of Apr 17.
Step 1 · Sow
Start seeds indoors
Mar 20 – Apr 10
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 7 – Apr 28
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 27 – Jun 6
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 12 – Jul 26
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 7 – Sep 17
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Indianapolis's 178-day season leaves this much room.
Swiss chard on Indianapolis'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 17
OCT 14

Common questions

When can I sow swiss chard outdoors in Indianapolis?

Direct-sow around early April (Apr 7–Apr 28) in Indianapolis, based on its local frost dates. Confidence 81%.

When will swiss chard be ready to harvest in Indianapolis?

Expect to harvest from around late May (May 27–Jun 6) in Indianapolis, based on its local frost dates. Confidence 75%.

When should I start swiss chard seeds indoors in Indianapolis?

Start seeds indoors around mid March (Mar 20–Apr 10) in Indianapolis, based on its local frost dates. Confidence 79%.

When can I transplant swiss chard outdoors in Indianapolis?

Transplant outdoors around early April (Apr 7–Apr 28) in Indianapolis, based on its local frost dates. Confidence 81%.

Can I plant swiss chard in autumn in Indianapolis?

Yes — Indianapolis supports a second, autumn sowing of swiss chard around mid July (Jul 12–Jul 26), timed to mature before the first fall frost.

How long is the growing season in Indianapolis?

Indianapolis has roughly 178 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 Indianapolis'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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