When to plant kale in Ottawa
Common questions
When can I sow kale outdoors in Ottawa?
Direct-sow around late April (Apr 23–May 14) in Ottawa, based on its local frost dates. Confidence 86%.
When will kale be ready to harvest in Ottawa?
Expect to harvest from around mid June (Jun 17–Jul 7) in Ottawa, based on its local frost dates. Confidence 80%.
When should I start kale seeds indoors in Ottawa?
Start seeds indoors around mid March (Mar 18–Apr 8) in Ottawa, based on its local frost dates. Confidence 85%.
When can I transplant kale outdoors in Ottawa?
Transplant outdoors around late April (Apr 23–May 14) in Ottawa, based on its local frost dates. Confidence 86%.
Can I plant kale in autumn in Ottawa?
Yes — Ottawa supports a second, autumn sowing of kale around early July (Jul 4–Jul 18), timed to mature before the first fall frost.
How long is the growing season in Ottawa?
Ottawa has roughly 161 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 Ottawa's frost dates.