Walnut
Juglans regia
HighClimax
Production
A grand, long-lived nut and timber tree that anchors a system for generations. Beware: its roots and leaves release juglone, which stunts many plants, so don't underplant sensitive crops.
Tolerances & traits
- Strata
- High
- Lifecycle
- Climax
- Soil preference
- Loam, Clay
- Soil pH range
- 6 – 7.5
- Min. temperature
- -28°C
- Min. rainfall
- 700 mm/year
- Wind tolerance
- Medium
- Frost tolerance
- High
- Growth rate
- Medium
- Irrigation needed
- Medium
How to manage it
Large, long-lived nut and timber tree; needs deep fertile soil and plenty of space. Prune only in late summer as it bleeds heavily if cut in spring.
Watch out for
Strongly allelopathic - roots and leaves release juglone, which inhibits many plants (tomato, apple, potato and others); do not underplant sensitive crops. Late spring frosts damage new growth and flowers.
Design your line to see how your land fits Walnut.
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