What hardiness zone is Windsor?

Windsor is in Canadian Hardiness Zone 7. Mild coastal – year-round growing, tender perennials

When is the last frost in Windsor?

The average last frost date in Windsor is Late March – early April. Always watch local forecasts as it varies year to year.

What vegetables grow best in Windsor?

Zone 7 gardens in Windsor do well with cold-hardy brassicas, root vegetables, and many perennials. With a short frost-free period of around 185 days, choose varieties with days-to-maturity suited to your zone.

Gardening in Windsor, Ontario | GardeningKnowHow.ca

Gardening in Ontario

Ontario's diverse geography spans Zone 3 in the north to Zone 7 in the Niagara Peninsula. Southern Ontario's Great Lakes moderate temperatures, extending seasons and enabling wine grapes, tender perennials, and a remarkable breadth of food crops.

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Planting Calendar – June 2026

Windsor

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Growing season Shoulder This month

Task	Details
Start Indoors	Succession sow lettuce every 2 weeks
Direct Sow	All warm-season crops now safe Zone 3+
Key Tasks	Mulch beds; set up drip irrigation

Frost Dates – Windsor

🌸

Last Spring Frost

Late March – early April

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First Fall Frost

November

Frost-free period: Approximately 185 days. Always check Environment Canada's local forecast — frost dates can vary by 2–3 weeks depending on microclimates, elevation, and annual weather patterns.