Variety fit — Delaware
Can I grow Santa Rosa plum in Delaware?
The verdict
Yes
- Your zone 7b and typical 1573 chill hours both suit this variety.
Based on Delaware’s main growing area (19901): zone 7b, ~1,573 chill hours. Your exact site may differ — check your ZIP.
The numbers
| Santa Rosa chill requirement | 300 chill hours |
|---|---|
| Santa Rosa hardiness | USDA zones 5–10 |
| Delaware average chill (19901) | 1,573 hours (1,181–1,808 across 10 winters) |
| Delaware zone (19901) | USDA zone 7b |
Keep checking
Or the same verdict for another region:
Planting a Santa Rosa in Delaware? Get its care calendar for your exact ZIP code, starting with this month’s tasks for one tree, free.
Save your first tree freeQuestions
- Can I grow Santa Rosa plum in Delaware?
- Yes — Your zone 7b and typical 1573 chill hours both suit this variety.
Planting a Santa Rosa? Gear that helps
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Before you plantMySoil mail-in soil test kitLab-grade pH and nutrient analysis with amendment recommendations — worth doing before you plant.View on Amazon →First-year wateringTreegator slow-release watering bag20 gallons drips over 5–9 hours — the easiest way to keep a first-year tree consistently watered.View on Amazon →Bark protectionExpandable trunk protectors (5-pack)Stops rabbit, vole, and mower damage on young bark — cheap insurance for a new orchard.View on Amazon →
Sources
- [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
- [2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026
- [3] Dave Wilson Nursery. Santa Rosa Plum — DWN Variety Finder — accessed July 2026
- [4] Dave Wilson Nursery. Santa Rosa — variety specifications — accessed October 2026