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Variety fit — Washington

Can I grow Italian Prune 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

Italian Prune requirements vs. Washington climate
Italian Prune chill requirement800 chill hours
Italian Prune 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 Italian Prune plum
Prunus domestica: Italian PruneUSDA pomological watercolor, L.C.C. (Louis Charles Christopher) Krieger, 1939 · USDA Pomological Watercolor Collection

Keep checking

Or the same verdict for another region:

Planting an Italian Prune in Washington? Get its care calendar for your exact ZIP code, with email reminders.

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Questions

Can I grow Italian Prune 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. Italian Prune — variety specifications — accessed July 2026