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Variety fit — Ontario

Can I grow Haralson apple in Ontario?

The verdict

Not recommended

  • Your zone 6b is warmer than this variety's range (zones 3–4); it may not receive reliable winter chilling.

Based on Ontario’s main growing area (L2R): zone 6b, ~1,677 chill hours. Your exact site may differ — check your ZIP.

Haralson requirements vs. Ontario climate
Haralson chill requirement800–1,000 chill hours
Haralson hardinessUSDA zones 3–4
Ontario average chill (L2R)1,677 hours (1,342–1,953 across 10 winters)
Ontario zone (L2R)USDA zone 6b
USDA pomological watercolor of Haralson apple
Malus domestica: HaralsonUSDA pomological watercolor, Mary Daisy Arnold, 1934 · USDA Pomological Watercolor Collection

These meet Ontario’s chill hours and zone comfortably:

Or the same verdict for another region:

Can I grow Haralson apple in Ontario?
Probably not — Your zone 6b is warmer than this variety's range (zones 3–4); it may not receive reliable winter chilling.

Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] Natural Resources Canada. Plant Hardiness Zones of Canada — accessed July 2026
  3. [3] University of Minnesota Extension. Growing apples in the home garden — accessed July 2026
  4. [4] Dave Wilson Nursery. Apples — DWN Variety Finder product list — accessed July 2026