Home › Brussels Sprouts › Grow in Ontario

Can You Grow Brussels Sprouts in Ontario?

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

Grows well here

Brussels sprouts grow here with a long enough frost-free season — frost actually improves them.

Plant zones

3a–9a

Ontario last frost

mid-April

Ontario first frost

mid-October

Days to harvest

90–180 days

When to plant Brussels Sproutses in Ontario

Start indoors

Feb 17

Transplant

Apr 15

Harvest

Jul 14 – Oct 12

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

About Brussels Sprouts

Brussels sprouts have a long season but reward patience — sprouts actually improve after a light frost.

Start indoors 8 weeks before last frost. Plant in the sunniest spot. Needs a long season — start early. Frost improves flavour. Stake in exposed positions against autumn winds.

Full brussels sprouts 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.