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Can You Grow Cilantro in Ontario?

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

Grows well here

Cilantro grows easily here as a cool-season herb — sow every few weeks for continuous harvest.

Plant zones

3a–9a

Ontario last frost

mid-April

Ontario first frost

mid-October

Days to harvest

21–45 days

When to plant Cilantros in Ontario

Direct sow

Apr 15

Harvest

May 6 – May 30

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

About Cilantro

Cilantro bolts to seed quickly in heat — succession plant every 2-3 weeks for continuous harvest.

Direct sow every 3 weeks for continuous harvest. Bolts in heat — plant in shade in summer or focus on cool seasons. Harvest before it bolts. Let some bolt to collect coriander seeds.

Full cilantro 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.