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Variety fit — Michigan

Can I grow French Improved Prune plum in Michigan?

The verdict

Yes

  • Your zone 6b and typical 1740 chill hours both suit this variety.

Based on Michigan’s main growing area (49417): zone 6b, ~1,740 chill hours. Your exact site may differ — check your ZIP.

The numbers

French Improved Prune requirements vs. Michigan climate
French Improved Prune chill requirement800 chill hours
Michigan average chill (49417)1,740 hours (1,307–2,091 across 10 winters)
Michigan zone (49417)USDA zone 6b
French Improved Prune plumSpecies illustration — no historical watercolor exists for this cultivar

Keep checking

Or the same verdict for another region:

Planting a French Improved Prune in Michigan? Get its care calendar for your exact ZIP code, with email reminders.

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Questions

Can I grow French Improved Prune plum in Michigan?
Yes — Your zone 6b and typical 1740 chill hours both suit this variety.

Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026
  3. [3] Dave Wilson Nursery. French Improved Prune — DWN Variety Finder — accessed July 2026