Variety fit — North Dakota
Can I grow French Improved Prune plum in North Dakota?
The verdict
Not recommended
- Your zone 4a is colder than this variety's hardiness range (zones 5–9); winter cold may damage or kill the tree.
Based on North Dakota’s main growing area (58102): zone 4a, ~1,044 chill hours. Your exact site may differ — check your ZIP.
The numbers
| French Improved Prune chill requirement | 800 chill hours |
|---|---|
| French Improved Prune hardiness | USDA zones 5–9 |
| North Dakota average chill (58102) | 1,044 hours (672–1,336 across 10 winters) |
| North Dakota zone (58102) | USDA zone 4a |
Better plum choices for North Dakota
These meet North Dakota’s chill hours and zone comfortably:
Keep checking
- Full French Improved Prune growing details
- 58102 climate profile
- Everything that grows in North Dakota
Or the same verdict for another region:
Questions
- Can I grow French Improved Prune plum in North Dakota?
- Probably not — Your zone 4a is colder than this variety's hardiness range (zones 5–9); winter cold may damage or kill the tree.
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. French Improved Prune — DWN Variety Finder — accessed July 2026
- [4] Dave Wilson Nursery. French Improved Prune — variety specifications — accessed October 2026