Toronto, Ontario
When to plant tomato in Toronto
Station data · 88% confidence warm seasontender to frost
- Harvestmid JulyJul 15 – Aug 9 · 79% conf.
- Start seeds indoorslate MarchMar 28 – Apr 18 · 84% conf.
- Transplant outdoorsmid MayMay 16 – Jun 6 · 88% conf.
The growing window at a glance
Frost-free growing season · 150 daysFrost risk (before May 9 / after Oct 6)
Tomato at a glance in Toronto
- Needs soil above 16°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 tomato be ready to harvest in Toronto?
Expect to harvest from around mid July (Jul 15–Aug 9) in Toronto, based on its local frost dates. Confidence 79%.
When should I start tomato 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 tomato 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 tomato to maturity outdoors.