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When to plant swiss chard in Yonkers

Swiss chard is cold-hardy, so every date keys off Yonkers's frost dates of Apr 7.
Step 1 · Sow
Start seeds indoors
Mar 10 – Mar 31
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 6 – Apr 27
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 26 – Jun 5
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 29 – Aug 12
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 24 – Oct 4
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Yonkers's 213-day season leaves this much room.
Swiss chard on Yonkers'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 7
NOV 4

Common questions

When can I sow swiss chard outdoors in Yonkers?

Direct-sow around early April (Apr 6–Apr 27) in Yonkers, based on its local frost dates. Confidence 85%.

When will swiss chard be ready to harvest in Yonkers?

Expect to harvest from around late May (May 26–Jun 5) in Yonkers, based on its local frost dates. Confidence 79%.

When should I start swiss chard seeds indoors in Yonkers?

Start seeds indoors around early March (Mar 10–Mar 31) in Yonkers, based on its local frost dates. Confidence 84%.

When can I transplant swiss chard outdoors in Yonkers?

Transplant outdoors around early April (Apr 6–Apr 27) in Yonkers, based on its local frost dates. Confidence 85%.

Can I plant swiss chard in autumn in Yonkers?

Yes — Yonkers supports a second, autumn sowing of swiss chard around late July (Jul 29–Aug 12), timed to mature before the first fall frost.

How long is the growing season in Yonkers?

Yonkers has roughly 213 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 Yonkers'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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