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When to plant cabbage in New Haven

Cabbage is cold-hardy, so every date keys off New Haven's frost dates of Apr 19.
Step 1 · Sow
Start seeds indoors
Mar 8 – Mar 29
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 5 – Apr 26
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 14 – Jul 14
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 20 – Jul 4
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 5 – Oct 5
Maturity window for the second sowing.
Window
Days to maturity
70 – 100 d
New Haven's 184-day season leaves this much room.
Cabbage on New Haven'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 19
OCT 19

Common questions

When will cabbage be ready to harvest in New Haven?

Expect to harvest from around mid June (Jun 14–Jul 14) in New Haven, based on its local frost dates. Confidence 75%.

When should I start cabbage seeds indoors in New Haven?

Start seeds indoors around early March (Mar 8–Mar 29) in New Haven, based on its local frost dates. Confidence 79%.

When can I transplant cabbage outdoors in New Haven?

Transplant outdoors around early April (Apr 5–Apr 26) in New Haven, based on its local frost dates. Confidence 81%.

Can I plant cabbage in autumn in New Haven?

Yes — New Haven supports a second, autumn sowing of cabbage around mid June (Jun 20–Jul 4), timed to mature before the first fall frost.

How long is the growing season in New Haven?

New Haven has roughly 184 frost-free days, which is enough time to grow cabbage to maturity outdoors.

The rule of thumb

Sow cabbage 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 New Haven'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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