When to plant kale in Portland
Common questions
When can I sow kale outdoors in Portland?
Direct-sow around late December (Dec 26–Jan 16) in Portland, based on its local frost dates. Confidence 85%.
When will kale be ready to harvest in Portland?
Expect to harvest from around mid February (Feb 19–Mar 11) in Portland, based on its local frost dates. Confidence 79%.
When should I start kale seeds indoors in Portland?
Start seeds indoors around mid January (Jan 18–Feb 8) in Portland, based on its local frost dates. Confidence 84%.
When can I transplant kale outdoors in Portland?
Transplant outdoors around late December (Dec 26–Jan 16) in Portland, based on its local frost dates. Confidence 85%.
Can I plant kale in autumn in Portland?
Yes — Portland supports a second, autumn sowing of kale around mid August (Aug 18–Sep 1), timed to mature before the first fall frost.
How long is the growing season in Portland?
Portland has roughly 266 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 Portland's frost dates.