When to plant kale in Seattle
Common questions
When can I sow kale outdoors in Seattle?
Direct-sow around late December (Dec 26–Jan 16) in Seattle, based on its local frost dates. Confidence 81%.
When will kale be ready to harvest in Seattle?
Expect to harvest from around mid February (Feb 19–Mar 11) in Seattle, based on its local frost dates. Confidence 75%.
When should I start kale seeds indoors in Seattle?
Start seeds indoors around early February (Feb 3–Feb 24) in Seattle, based on its local frost dates. Confidence 79%.
When can I transplant kale outdoors in Seattle?
Transplant outdoors around late December (Dec 26–Jan 16) in Seattle, based on its local frost dates. Confidence 81%.
Can I plant kale in autumn in Seattle?
Yes — Seattle supports a second, autumn sowing of kale around early August (Aug 9–Aug 23), timed to mature before the first fall frost.
How long is the growing season in Seattle?
Seattle has roughly 237 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 Seattle's frost dates.