When to plant broccoli in Seattle
Common questions
When will broccoli be ready to harvest in Seattle?
Expect to harvest from around late February (Feb 24–Mar 21) in Seattle, based on its local frost dates. Confidence 75%.
When should I start broccoli 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 broccoli 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 broccoli in autumn in Seattle?
Yes — Seattle supports a second, autumn sowing of broccoli around late July (Jul 30–Aug 13), 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 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 Seattle's frost dates.