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Can You Grow Zucchini in Ontario?

Canada · Canadian Zone 5 · zones 3, 4, 5, 6, 7

Grows well here

Zucchini thrives here and is one of the easiest most productive crops you can grow.

Plant zones

4a–11b

Ontario last frost

mid-April

Ontario first frost

mid-October

Days to harvest

45–60 days

When to plant Zucchinis in Ontario

Start indoors

Mar 25

Transplant

Apr 15

Harvest

May 30 – Jun 14

Dates are approximate, based on Ontario's average frost dates. Your exact yard may vary by microclimate.

About Zucchini

One of the most productive garden plants — a single zucchini plant can yield more than a family can eat at peak season.

Direct sow after last frost. Give each plant 2-4 sq metres of space. Water at the base to prevent fungal disease. Pick frequently to keep the plant producing.

Full zucchini growing guide →

Gardening in Ontario

Ontario spans several climate zones. Northern Ontario is Zone 3-4 with short seasons; southern Ontario is Zone 5-7 with long productive seasons. The Niagara Peninsula is one of Canada's premier fruit-growing regions.