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Variety fit — Washington

Can I grow Stanley plum in Washington?

The verdict

Yes

  • Your zone 7a and typical 2150 chill hours both suit this variety.

Based on Washington’s main growing area (98801): zone 7a, ~2,150 chill hours. Your exact site may differ — check your ZIP.

The numbers

Stanley requirements vs. Washington climate
Stanley chill requirement800 chill hours
Stanley hardinessUSDA zones 4–9
Washington average chill (98801)2,150 hours (1,612–2,552 across 10 winters)
Washington zone (98801)USDA zone 7a
USDA pomological watercolor of Stanley plum
Prunus domestica: StanleyUSDA pomological watercolor, J. Marion Shull, 1937 · USDA Pomological Watercolor Collection

Keep checking

Or the same verdict for another region:

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Questions

Can I grow Stanley plum in Washington?
Yes — Your zone 7a and typical 2150 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. Stanley Prune — variety specifications — accessed July 2026