When to plant kale in Portland
Common questions
When can I sow kale outdoors in Portland?
Direct-sow around mid April (Apr 13–May 4) in Portland, based on its local frost dates. Confidence 86%.
When will kale be ready to harvest in Portland?
Expect to harvest from around early June (Jun 7–Jun 27) in Portland, based on its local frost dates. Confidence 80%.
When should I start kale 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 kale outdoors in Portland?
Transplant outdoors around mid April (Apr 13–May 4) in Portland, based on its local frost dates. Confidence 86%.
Can I plant kale in autumn in Portland?
Yes — Portland supports a second, autumn sowing of kale around early July (Jul 6–Jul 20), 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 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.