When to plant broccoli in Washington
Common questions
When will broccoli be ready to harvest in Washington?
Expect to harvest from around early May (May 9–Jun 3) in Washington, based on its local frost dates. Confidence 80%.
When should I start broccoli 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 broccoli outdoors in Washington?
Transplant outdoors around early March (Mar 10–Mar 31) in Washington, based on its local frost dates. Confidence 89%.
Can I plant broccoli in autumn in Washington?
Yes — Washington supports a second, autumn sowing of broccoli around early August (Aug 3–Aug 17), 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 broccoli to maturity outdoors.
Sow broccoli 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.