When to plant kale in Scottsdale

Kale is cold-hardy, so every date keys off Scottsdale's frost dates of Feb 6.
Step 1 · Sow
Start seeds indoors
Dec 26 – Jan 16
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Dec 26 – Jan 16
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Feb 19 – Mar 11
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Sep 1 – Sep 15
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Nov 2 – Nov 22
Maturity window for the second sowing.
Window
Days to maturity
55 – 75 d
Scottsdale's 303-day season leaves this much room.
Kale on Scottsdale'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
FEB 6
DEC 6

Common questions

When can I sow kale outdoors in Scottsdale?

Direct-sow around late December (Dec 26–Jan 16) in Scottsdale, based on its local frost dates. Confidence 81%.

When will kale be ready to harvest in Scottsdale?

Expect to harvest from around mid February (Feb 19–Mar 11) in Scottsdale, based on its local frost dates. Confidence 76%.

When should I start kale seeds indoors in Scottsdale?

Start seeds indoors around late December (Dec 26–Jan 16) in Scottsdale, based on its local frost dates. Confidence 80%.

When can I transplant kale outdoors in Scottsdale?

Transplant outdoors around late December (Dec 26–Jan 16) in Scottsdale, based on its local frost dates. Confidence 81%.

Can I plant kale in autumn in Scottsdale?

Yes — Scottsdale supports a second, autumn sowing of kale around early September (Sep 1–Sep 15), timed to mature before the first fall frost.

How long is the growing season in Scottsdale?

Scottsdale has roughly 303 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 Scottsdale's frost dates.

Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.