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Can You Grow Tomato in Ontario?

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

Grows well here

Tomatoes grow well here — plant after your last frost date and expect harvest within 60-85 days.

Plant zones

4a–11b

Ontario last frost

mid-April

Ontario first frost

mid-October

Days to harvest

60–85 days

When to plant Tomatoes in Ontario

Start indoors

Mar 3

Transplant

Apr 15

Harvest

Jun 14 – Jul 9

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

About Tomato

One of the most popular garden vegetables — thrives in warm weather and full sun with consistent moisture.

Start seeds indoors 6-8 weeks before last frost. Plant deeply — tomatoes root along buried stems. Water consistently to prevent blossom end rot.

Full tomato 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.

See what grows well in Ontario →

Frequently asked questions

Can you grow Tomato in Ontario?

Tomatoes grow well here — plant after your last frost date and expect harvest within 60-85 days.

What zone is Ontario?

Ontario spans Canadian Zone 5 (3, 4, 5, 6, 7).

When do you plant Tomatoes in Ontario?

Plant Tomatoes around mid-April (start indoors Mar 3), harvest Jun 14 – Jul 9.