Toronto, Ontario
When to plant broccoli in Toronto
Station data · 88% confidence cool seasonhardy to frost
- Harvestlate JuneJun 24 – Jul 19 · 79% conf.
- Start seeds indoorslate MarchMar 28 – Apr 18 · 84% conf.
- Transplant outdoorslate AprilApr 25 – May 16 · 88% conf.
The growing window at a glance
Frost-free growing season · 150 daysFrost risk (before May 9 / after Oct 6)
Broccoli at a glance in Toronto
- Needs soil above 5°C to germinate well.
- Days to maturity: 60–85 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 will broccoli be ready to harvest in Toronto?
Expect to harvest from around late June (Jun 24–Jul 19) in Toronto, based on its local frost dates. Confidence 79%.
When should I start broccoli seeds indoors in Toronto?
Start seeds indoors around late March (Mar 28–Apr 18) in Toronto, based on its local frost dates. Confidence 84%.
When can I transplant broccoli outdoors in Toronto?
Transplant outdoors around late April (Apr 25–May 16) 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 broccoli to maturity outdoors.