Variety fit — New Brunswick

Can I grow Chestnut Crab apple in New Brunswick?

The verdict

Not recommended

Your zone 5b is warmer than this variety's range (zones 3–4); it may not receive reliable winter chilling.

Based on New Brunswick’s main growing area (E3B): zone 5b, ~1,320 chill hours. Your exact site may differ — check your ZIP.

The numbers

Chestnut Crab requirements vs. New Brunswick climate
Chestnut Crab hardiness	USDA zones 3–4
New Brunswick average chill (E3B)	1,320 hours (1,192–1,580 across 10 winters)
New Brunswick zone (E3B)	USDA zone 5b

Chestnut Crab appleSpecies illustration — no historical watercolor exists for this cultivar

These meet New Brunswick’s chill hours and zone comfortably:

Or the same verdict for another region:

Can I grow Chestnut Crab apple in New Brunswick?: Probably not — Your zone 5b is warmer than this variety's range (zones 3–4); it may not receive reliable winter chilling.

[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] Natural Resources Canada. Plant Hardiness Zones of Canada — accessed July 2026
[3] University of Minnesota Extension. Growing apples in the home garden — accessed July 2026