Overview
Juglans regia is a tree, large tree in the genus Juglans, part of the Juglandaceae family, with deciduous foliage. It typically grows around 20.0 m tall. Juglans regia grows best in full sun, and tolerates most soils and neutral pH. Its UK hardiness is rated H7. Suggested uses include specimen tree and woodland planting. It is native to Afghanistan, Iran, Iraq, Lebanon-Syria, North Caucasus, Pakistan, Transcaucasus, Türkiye and West Himalaya.
About
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.
Wikipedia contributors, CC BY-SA 4.0 — Juglans regia
About the genus
Walnut trees are any species of tree in the plant genus Juglans, the type genus of the family Juglandaceae, the seeds of which are referred to as walnuts. All species are deciduous trees, 10–40 metres (33–131 ft) tall, with pinnate leaves 200–900 millimetres (7.9–35.4 in), with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts (Pterocarya), but not the hickories (Carya) in the same family.
Wikipedia contributors, "Juglans", CC BY-SA 4.0 — Juglans
Growing conditions
Best soil and position for Juglans
- Sunlight
- Full sun
- Soil type
- Sandy, Loamy, Clay
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H7
Plant details
Juglans regia size, habit and characteristics
- Plant type
- Tree
- Habit
- Tree, Large
- Foliage
- Deciduous
- Height
- 20.0 m
- Suggested uses
- Specimen tree, Woodland planting
- Native to
- Afghanistan, Iran, Iraq, Lebanon-Syria, North Caucasus, Pakistan, Transcaucasus, Türkiye, West Himalaya
Care notes
Pruning and caring for Juglans regia
- Propagation
- Seed, Graft
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Juglans regia?
Juglans regia prefers full sun. It suits sheltered positions.
What soil does Juglans regia need?
Juglans regia is adaptable and grows happily in most soil types, including sandy, loamy and clay. It prefers neutral soil. Aim for soil that stays moist but well-drained.
How big does Juglans regia grow?
Juglans regia reaches a height of 20.0 m.
Is Juglans regia hardy in the UK?
Juglans regia has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Juglans regia?
Seed, Graft.
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