When to plant cauliflower in Washington
Common questions
When will cauliflower be ready to harvest in Washington?
Expect to harvest from around mid May (May 11–Jun 5) in Washington, based on its local frost dates. Confidence 80%.
When should I start cauliflower 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 cauliflower outdoors in Washington?
Transplant outdoors around mid March (Mar 12–Apr 2) in Washington, based on its local frost dates. Confidence 86%.
Can I plant cauliflower in autumn in Washington?
Yes — Washington supports a second, autumn sowing of cauliflower around late July (Jul 21–Aug 4), 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 cauliflower to maturity outdoors.
Sow cauliflower 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.