Variety fit — Ontario
Can I grow North Star tart-cherry in Ontario?
The verdict
Yes
- Your zone 6b and typical 1677 chill hours both suit this variety.
Based on Ontario’s main growing area (L2R): zone 6b, ~1,677 chill hours. Your exact site may differ — check your ZIP.
The numbers
| North Star chill requirement | 500 chill hours |
|---|---|
| North Star hardiness | USDA zones 4–8 |
| Ontario average chill (L2R) | 1,677 hours (1,342–1,953 across 10 winters) |
| Ontario zone (L2R) | USDA zone 6b |
Keep checking
Or the same verdict for another region:
Planting a North Star in Ontario? Get its care calendar for your exact ZIP code, with email reminders.
Save this tree in My OrchardQuestions
- Can I grow North Star tart-cherry in Ontario?
- Yes — Your zone 6b and typical 1677 chill hours both suit this variety.
Sources
- [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] Dave Wilson Nursery. Cherries — DWN Variety Finder product list — accessed July 2026
- [4] University of Minnesota (UFOR Nursery & Lab). North Star Sour Cherry — Prunus 'North Star' — accessed July 2026