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Days to maturity
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Plant · P-534
English Walnut
Juglans regia
English walnut is a large deciduous tree grown for its rich, high-fat nut, which cracks free of a hard shell after the green husk splits in autumn; grafted trees start bearing at five or six years and can reach around 2.5 tonnes of nuts per hectare by seven or eight. Its roots and fallen leaves leach juglone, a compound toxic to apples, tomatoes and several other common garden plants, so what grows beneath and around it has to be chosen carefully. The wood is one of the classic furniture and veneer timbers, prized enough that a mature tree can be worth as much for its lumber as for its nuts.
Record at a glance
Growing profile
- Sun
- Full Sun
- USDA zone
- USDA 3–7
- Soil
- Silt · Loam · Clay
- Moisture
- Well-Drained · Moderate
Vertical layer
Canopy- Soil pH
- 6–8
- Plant type
- Deciduous Tree
- Mature height
- 40–60 ft
- Mature spread
- 40–60 ft
- Plant spacing
- 30–50 ft
- Root type
- Tap
- Spread pattern
- Seed
Keep exploring
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American Beech
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American Chestnut
Castanea dentata
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American Elm
Ulmus americana
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American Holly
Ilex opaca
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The deeper layer
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- Primary
- Locked ecological function
- Secondary
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- Byproduct
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Behind the record
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