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Can You Grow Sunflower in New Brunswick?

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

Grows well here

Sunflowers grow brilliantly here — they love the warm season and produce quickly.

Plant zones

2a–11b

New Brunswick last frost

mid-April

New Brunswick first frost

mid-October

Days to harvest

60–80 days

When to plant Sunflowers in New Brunswick

Direct sow

Apr 15

Harvest

Jun 14 – Jul 4

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

About Sunflower

Sunflowers are fast-growing cheerful and attract pollinators — some varieties produce edible seeds.

Direct sow after last frost in the sunniest spot available. No transplanting needed. Giant varieties need staking. Harvest seed heads when the back turns brown and seeds are firm.

Full sunflower growing guide →

Gardening in New Brunswick

New Brunswick has a maritime continental climate. The Saint John River Valley is Zone 5b-6a. Four distinct seasons with a productive 5-6 month growing season. Known for potatoes, blueberries, and fiddleheads.