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Can You Grow Watermelon in New Brunswick?

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

Grows well here

Watermelons thrive here — they love the long warm season your zone provides.

Plant zones

4b–11b

New Brunswick last frost

mid-April

New Brunswick first frost

mid-October

Days to harvest

70–90 days

When to plant Watermelons in New Brunswick

Start indoors

Mar 18

Transplant

Apr 15

Harvest

Jun 24 – Jul 14

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

About Watermelon

Watermelons love heat space and sun — they are a rewarding crop but need a long warm season.

Start indoors 4 weeks before last frost. Transplant carefully — watermelons hate root disturbance. Give them maximum space. Use black plastic mulch to warm soil. Choose icebox varieties for containers.

Full watermelon 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.

See what grows well in New Brunswick →

Frequently asked questions

Can you grow Watermelon in New Brunswick?

Watermelons thrive here — they love the long warm season your zone provides.

What zone is New Brunswick?

New Brunswick spans Canadian Zone 5 (4, 5, 6).

When do you plant Watermelons in New Brunswick?

Plant Watermelons around mid-April (start indoors Mar 18), harvest Jun 24 – Jul 14.