When to plant kale in Sioux Falls

Kale is cold-hardy, so every date keys off Sioux Falls's frost dates of May 1.
Step 1 · Sow
Start seeds indoors
Mar 20 – Apr 10
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 10 – May 1
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 4 – Jun 24
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 28 – Jul 12
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Aug 29 – Sep 18
Maturity window for the second sowing.
Window
Days to maturity
55 – 75 d
Sioux Falls's 153-day season leaves this much room.
Kale on Sioux Falls'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
MAY 1
OCT 2

Common questions

When can I sow kale outdoors in Sioux Falls?

Direct-sow around early April (Apr 10–May 1) in Sioux Falls, based on its local frost dates. Confidence 89%.

When will kale be ready to harvest in Sioux Falls?

Expect to harvest from around early June (Jun 4–Jun 24) in Sioux Falls, based on its local frost dates. Confidence 80%.

When should I start kale seeds indoors in Sioux Falls?

Start seeds indoors around mid March (Mar 20–Apr 10) in Sioux Falls, based on its local frost dates. Confidence 85%.

When can I transplant kale outdoors in Sioux Falls?

Transplant outdoors around early April (Apr 10–May 1) in Sioux Falls, based on its local frost dates. Confidence 89%.

Can I plant kale in autumn in Sioux Falls?

Yes — Sioux Falls supports a second, autumn sowing of kale around late June (Jun 28–Jul 12), timed to mature before the first fall frost.

How long is the growing season in Sioux Falls?

Sioux Falls has roughly 153 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 Sioux Falls's frost dates.

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