Juglans nigra (F)
black walnut
A vigorous, large, deciduous, broad-crowned tree with large pinnate leaves composed of 15-21 lanceolate leaflets, with 10cm long male catkins and insignificant female flowers followed by globose green fruits, 5cm wide
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Size
Ultimate height
Higher than 12 metresTime to ultimate height
more than 50 yearsUltimate spread
Wider than 8 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Juglandaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Juglans are deciduous trees with pinnate leaves, and inconspicuous flowers in catkins followed by usually edible nuts
- Name status
Correct
- Plant range
- E USA
How to grow
Cultivation
Grow as a specimen tree in any well-drained or moist but well-drained soil in full sun
Propagation
Propagate by seed or grafting
Suggested planting locations and garden types
- Low Maintenance
Pruning
Pests
May be susceptible to aphids and walnut blister mite
Diseases
May be susceptible to walnut leaf spot, walnut leaf blotch, honey fungus and coral spot
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