When to plant kale in Washington
Common questions
When can I sow kale outdoors in Washington?
Direct-sow around early March (Mar 3–Mar 24) in Washington, based on its local frost dates. Confidence 89%.
When will kale be ready to harvest in Washington?
Expect to harvest from around late April (Apr 27–May 17) in Washington, based on its local frost dates. Confidence 80%.
When should I start kale seeds indoors in Washington?
Start seeds indoors around early February (Feb 10–Mar 3) in Washington, based on its local frost dates. Confidence 85%.
When can I transplant kale outdoors in Washington?
Transplant outdoors around early March (Mar 3–Mar 24) in Washington, based on its local frost dates. Confidence 89%.
Can I plant kale in autumn in Washington?
Yes — Washington supports a second, autumn sowing of kale around mid August (Aug 13–Aug 27), timed to mature before the first fall frost.
How long is the growing season in Washington?
Washington has roughly 234 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 Washington's frost dates.