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New Brunswick Planting Calendar

New Brunswick spans USDA hardiness zones 4a, 4b, 5a, 5b. Planting dates vary significantly across the state depending on your zone. Find your county on the map below for exact frost dates and planting windows.

Find Your County

Click any county to see your local planting calendar with exact frost dates and planting windows.

Zones in New Brunswick

Growing Season Comparison

Frost Dates & Growing Season by County

View all 6 New Brunswick counties with frost dates
County Zone Last Frost First Frost Growing Days
Bathurst 5a May 3 Oct 10 160
Edmundston 5a May 2 Oct 9 160
Fredericton 5b Apr 24 Oct 8 167
Miramichi 5b Apr 25 Oct 9 166
Moncton 6a Apr 21 Oct 18 180
Saint John 6a Apr 20 Oct 17 180

🥬 Vegetables

Browse all 115 vegetables you can grow in New Brunswick

🍓 Fruits

Browse all 34 fruits you can grow in New Brunswick

🌿 Herbs

Browse all 39 herbs you can grow in New Brunswick

🌸 Flowers

Browse all 54 flowers you can grow in New Brunswick

Monthly Planting Guide for New Brunswick

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.