About
The flowers are insignificant but turn into green fruit in late summer from which edible walnuts can be extracted. A broad deciduous tree reaching 25m tall by 15m wide. The leaves emerge copper-coloured then become vivid green then yellow before they fall. They are very large (up to 50cm long) and have usually 9 or 11 pointed leaflets which are fragranced when bruised.
About the genus
Juglans are deciduous trees with pinnate leaves, and inconspicuous flowers in catkins followed by usually edible nuts
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectEast-facing, North-facing, South-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeTrees
HabitSpreading branched
FoliageDeciduous
HeightHigher than 12 metres
Spreadwider than 8 metres
Time to full height20-50 years
Suggested usesArchitectural
FragranceFoliage
Care notes
CultivationGrow in any deep, fertile soil. Suited to very large gardens or parks. For nut production, more than one tree is needed for cross pollination
PruningPruning group 1
PropagationPropagate by seed (for more advice see propagate from seed (tree/shrub)
Pest resistanceMay be susceptible to aphids and walnut blister mites
Disease resistanceMay be susceptible to walnut leaf spot, walnut leaf blotch, honey fungus and coral spot