When to plant kale in Boise
Common questions
When can I sow kale outdoors in Boise?
Direct-sow around mid April (Apr 11–May 2) in Boise, based on its local frost dates. Confidence 89%.
When will kale be ready to harvest in Boise?
Expect to harvest from around early June (Jun 5–Jun 25) in Boise, based on its local frost dates. Confidence 80%.
When should I start kale seeds indoors in Boise?
Start seeds indoors around late March (Mar 21–Apr 11) in Boise, based on its local frost dates. Confidence 85%.
When can I transplant kale outdoors in Boise?
Transplant outdoors around mid April (Apr 11–May 2) in Boise, based on its local frost dates. Confidence 89%.
Can I plant kale in autumn in Boise?
Yes — Boise supports a second, autumn sowing of kale around mid July (Jul 13–Jul 27), timed to mature before the first fall frost.
How long is the growing season in Boise?
Boise has roughly 168 frost-free days, which is enough time to grow kale to maturity outdoors.
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 Boise's frost dates.