Heartnut |
| General |
| Common Name | Heartnut |
| Latin Name | Juglans ailantifolia |
| Category | Nuts |
| Family | Walnut |
| Variety | var. cordiformus |
| Visual Traits |
| Flower | monoecious, self-fertile, June |
| Fruit / Nut | heart-shaped; thinner shell than North American walnuts; |
| Height | 20m |
| Spread | 15m |
| Cultivation |
| Pollination | wind pollinated |
| Propagation method | grafted seedlings; offspring of seeds do not produce true to heartnut shape |
| Pruning | late summer to fall, during dormancy |
| Seedling treatment | intolerant to root disturbance, plant in permanent location early, protect when young |
| Critters |
| Pathogens | Walnut bunch disease |
| Soils |
| Fertility / quality | fertile |
| Moisture and drainage | well-drained, moist |
| pH | 6.0-7.0 |
| Texture | sand and clay loam |
| Growth Pattern |
| Growth rate | medium |
| Longevity | long |
| Root habit | deep taproot |
| Seed-bearing age /max production | 1-3y / 6-8y (grafted trees) |
| Habitat and Climate |
| Hardiness Zone | 6-7, not recommened in regions colder than zone 6 |
| Native Range | only cultivated (originally in Japan and China) |
| Wind / ice / frost susceptibility | terminal buds susceptible to late frost |