Toronto, Ontario
When to plant garlic in Toronto
Station data · 88% confidence cool seasonvery-hardy to frost
- Direct sowearly SeptemberSep 8 – Sep 29 · 88% conf.
- Harvestearly MayMay 5 – May 5 · 79% conf.
The growing window at a glance
Frost-free growing season · 150 daysFrost risk (before May 9 / after Oct 6)
Garlic at a glance in Toronto
- Needs soil above 10°C to germinate well.
- Days to maturity: 240 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 garlic outdoors in Toronto?
Direct-sow around early September (Sep 8–Sep 29) in Toronto, based on its local frost dates. Confidence 88%.
When will garlic be ready to harvest in Toronto?
Expect to harvest from around early May (May 5–May 5) in Toronto, based on its local frost dates. Confidence 79%.
How long is the growing season in Toronto?
Toronto has roughly 150 frost-free days, which is marginal time to grow garlic to maturity outdoors.