Toronto, Ontario
When to plant cucumber in Toronto
Station data · 88% confidence warm seasontender to frost
- Direct sowmid MayMay 16 – Jun 6 · 88% conf.
- Harvestearly JulyJul 5 – Jul 25 · 79% conf.
- Start seeds indoorsmid AprilApr 18 – May 9 · 84% conf.
- Transplant outdoorsmid MayMay 16 – Jun 6 · 88% conf.
The growing window at a glance
Cucumber at a glance in Toronto
- Needs soil above 16°C to germinate well.
- Days to maturity: 50–70 days.
- Climate zone: Continental, warm summer (Dfb).
Frost dates are probabilities, not guarantees. Your garden's microclimate — slopes, walls, urban heat, cold pockets — can shift these dates by a week or more. Use them as a confident starting point, then watch your local forecast.
Frequently asked
When can I sow cucumber outdoors in Toronto?
Direct-sow around mid May (May 16–Jun 6) in Toronto, based on its local frost dates. Confidence 88%.
When will cucumber be ready to harvest in Toronto?
Expect to harvest from around early July (Jul 5–Jul 25) in Toronto, based on its local frost dates. Confidence 79%.
When should I start cucumber seeds indoors in Toronto?
Start seeds indoors around mid April (Apr 18–May 9) in Toronto, based on its local frost dates. Confidence 84%.
When can I transplant cucumber outdoors in Toronto?
Transplant outdoors around mid May (May 16–Jun 6) in Toronto, based on its local frost dates. Confidence 88%.
How long is the growing season in Toronto?
Toronto has roughly 150 frost-free days, which is enough time to grow cucumber to maturity outdoors.