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Variety fit — California

Can I grow Blue Damson plum in California?

The verdict

Yes

  • Your zone 9b and typical 1018 chill hours both suit this variety.

Based on California’s main growing area (95820): zone 9b, ~1,018 chill hours. Your exact site may differ — check your ZIP.

The numbers

Blue Damson requirements vs. California climate
Blue Damson chill requirement800 chill hours
California average chill (95820)1,018 hours (808–1,470 across 10 winters)
California zone (95820)USDA zone 9b
USDA pomological watercolor of Blue Damson plum
Prunus domestica: DamsonUSDA pomological watercolor, Royal Charles Steadman, 1930 · USDA Pomological Watercolor Collection

Keep checking

Or the same verdict for another region:

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Questions

Can I grow Blue Damson plum in California?
Yes — Your zone 9b and typical 1018 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. Blue Damson Plum — DWN Variety Finder — accessed July 2026