General Plant Information (Edit)
| Plant Habit: |
Tree
|
| Sun Requirements: |
Full Sun
Full Sun to Partial Shade
|
| Water Preferences: |
Mesic
|
| Soil pH Preferences: |
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
|
| Plant Height: |
25 to 40 feet |
| Leaves: |
Deciduous
|
| Fruit: |
Other: edible to humans
|
| Fruiting Time: |
Late summer or early fall
Fall
|
| Flowers: |
Inconspicuous
|
| Dynamic Accumulator: |
P (Phosphorus)
K (Potassium)
Ca (Calcium)
|
| Resistances: |
Deer Resistant
Rabbit Resistant
|
| Pollinators: |
Wind
|
| Miscellaneous: |
Monoecious
|
- Accepted: Juglans ailantifolia
- Synonym: Juglans cordiformis
- Synonym: Juglans sieboldiana
Posted by
ILPARW (southeast Pennsylvania - Zone 6b) on Jun 23, 2019 8:26 PM concerning plant:
The Japanese Walnut was brought to the USA in the 19th century as another nut tree. Unfortunately, a leaf and canker fungus came with it that was damaging to the similar American Butternut. The American species has since declined, but there are some around that often show some leaf damage and some not so much. A number of cultivars have been developed from the Japanese species. Furthermore, there are a number of hybrids between the Japanese x American species and cultivars taken from them. The Japanese species has slightly larger leaves to 35 inches long with usually 17 leaflets, with each leaflet to 7 inches long by 3 inches wide. Leaves are usually very soft hairy. The Japanese nuts are sort of heart-shaped.
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