Walnut
Juglans regia
Remember the juglone: keep it well away from apples, tomatoes and most vegetables. A long-term canopy tree to plant for the future.
Juglans regia, known by various common names including the common walnut, English walnut, or Persian walnut amongst other names, is a species of walnut. It is native to Eurasia in at least southwest and central Asia and southeast Europe, but its exact natural area is obscure due to its long history of cultivation.
Description from Wikipedia (CC BY-SA).
At a glance
- Sunlight
- Full sun
- Water need
- Low
- Mature height
- 12 m
- Maintenance
- Low
- Hardiness
- USDA 5–9
- Layers
- canopy
Functional roles
Pollination & soil
Self-fertile, but crops more reliably with a second tree as male and female flowers can open at different times.
- Soil
- medium/loam, heavy/clay
- pH
- Neutral, Alkaline
Deep, fertile soil; needs room for the roots.
Propagation
How to make more of this plant for free — the permaculture way.
When: Sow seed autumn; grafting is specialist
Companions & conflicts
- ✗Apple — Releases juglone, which suppresses apples and many other plants nearby.
Allelopathic (juglone); give it its own zone away from sensitive crops.
Where to get it
Read more
Seed data pending expert review. Identification photo and description are sourced from Wikipedia/Wikimedia; always confirm a plant in person before eating any part of it.