Juglans regia
Originating in the Carpathian mountains in Poland, this cold-hardy walnut species is also known as English or Persian walnut. Produces sweet, thin-shelled nuts that are easy to crack. Avoid planting in frost pockets as trees bloom in mid-May to early June. Some specimens are self-fertile but produce more with another Carpathian walnut planted nearby.
- Hardy Carpathian: Carpathian walnuts are thin-shelled and easy to crack. Avoid planting in frost pockets as trees bloom in mid-May to early June.
- Howard:ย Seedlings from a named tree selected for later flowering and leaf development and high-quality nut meat. Zones 6-9
Zone: 4-9 (Map)
Habitat: Prefers loamy, well-drained soils. Will tolerate drier, less-fertile sites. Full sun.
Growth: 50-70 ft tall, 30-40 ft wide at maturity.
Prohibited: AZ, CA, KS, TX