When to plant cauliflower in Portland
Common questions
When will cauliflower be ready to harvest in Portland?
Expect to harvest from around late June (Jun 22–Jul 17) in Portland, based on its local frost dates. Confidence 80%.
When should I start cauliflower seeds indoors in Portland?
Start seeds indoors around mid March (Mar 20–Apr 10) in Portland, based on its local frost dates. Confidence 85%.
When can I transplant cauliflower outdoors in Portland?
Transplant outdoors around late April (Apr 23–May 14) in Portland, based on its local frost dates. Confidence 86%.
Can I plant cauliflower in autumn in Portland?
Yes — Portland supports a second, autumn sowing of cauliflower around mid June (Jun 17–Jul 1), timed to mature before the first fall frost.
How long is the growing season in Portland?
Portland has roughly 165 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 Portland's frost dates.