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When to plant swiss chard in Aurora

Swiss chard is cold-hardy, so every date keys off Aurora's frost dates of Apr 21.
Step 1 · Sow
Start seeds indoors
Mar 24 – Apr 14
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 9 – Apr 30
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 29 – Jun 8
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 16 – Jul 30
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 11 – Sep 21
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Aurora's 175-day season leaves this much room.
Swiss chard on Aurora'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 21
OCT 17

Common questions

When can I sow swiss chard outdoors in Aurora?

Direct-sow around early April (Apr 9–Apr 30) in Aurora, based on its local frost dates. Confidence 86%.

When will swiss chard be ready to harvest in Aurora?

Expect to harvest from around late May (May 29–Jun 8) in Aurora, based on its local frost dates. Confidence 80%.

When should I start swiss chard seeds indoors in Aurora?

Start seeds indoors around late March (Mar 24–Apr 14) in Aurora, based on its local frost dates. Confidence 85%.

When can I transplant swiss chard outdoors in Aurora?

Transplant outdoors around early April (Apr 9–Apr 30) in Aurora, based on its local frost dates. Confidence 86%.

Can I plant swiss chard in autumn in Aurora?

Yes — Aurora supports a second, autumn sowing of swiss chard around mid July (Jul 16–Jul 30), timed to mature before the first fall frost.

How long is the growing season in Aurora?

Aurora has roughly 175 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 Aurora's frost dates.

Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.
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