When to plant kale in Anchorage

Kale is cold-hardy, so every date keys off Anchorage's frost dates of Apr 30.
Step 1 · Sow
Start seeds indoors
Mar 19 – Apr 9
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 30 – May 21
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 24 – Jul 14
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 22 – Jul 6
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Aug 23 – Sep 12
Maturity window for the second sowing.
Window
Days to maturity
55 – 75 d
Anchorage's 148-day season leaves this much room.
Kale on Anchorage'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 30
SEP 26

Common questions

When can I sow kale outdoors in Anchorage?

Direct-sow around late April (Apr 30–May 21) in Anchorage, based on its local frost dates. Confidence 82%.

When will kale be ready to harvest in Anchorage?

Expect to harvest from around late June (Jun 24–Jul 14) in Anchorage, based on its local frost dates. Confidence 76%.

When should I start kale seeds indoors in Anchorage?

Start seeds indoors around mid March (Mar 19–Apr 9) in Anchorage, based on its local frost dates. Confidence 81%.

When can I transplant kale outdoors in Anchorage?

Transplant outdoors around late April (Apr 30–May 21) in Anchorage, based on its local frost dates. Confidence 82%.

Can I plant kale in autumn in Anchorage?

Yes — Anchorage supports a second, autumn sowing of kale around late June (Jun 22–Jul 6), timed to mature before the first fall frost.

How long is the growing season in Anchorage?

Anchorage has roughly 148 frost-free days, which is enough time to grow kale to maturity outdoors.

The rule of thumb

Sow kale 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 Anchorage's frost dates.

Confidence 85/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.