Fruit and Nut
Heartnuts (Juglans ailantifolia var. cordiformis) are a relative of the walnut native to Japan but were introduced into North America during the Nineteenth century. They are relatively uncommon in Europe but are hardier and more vigorous than walnuts, less prone to disease and more tolerant of wet climates. They have the potential to do very well in Ireland. Young trees on our trial site near Westport have produced their first crop at five years.
The nuts are relatively hard to shell, but all the cultivars offered here have improved shelling capability. The trees offered are not grown from nut but are propagated vegetively by grafting fruiting scions of known cultivars onto seedling rootstocks. The cultivars all originate in Canada or the northern parts of United States.
Unlike trees raised from nut, which are unreliable in terms of nut production and quality, and take many years to reach nut bearing age, grafted trees always come true to form and begin cropping at a young age. The trees are generally not self-fertile so more than one cultivar should be planted.
Heartnuts grow into big trees so should be spaced at 10-12 meters.
Young grafted trees 30-45cm, 40-70mm, 70-100cm and 100cm-140cm
Supply of heartnuts is limited. All varieties listed as being available 2016/17 will sell out very early
Two year old plants raised at our own nursery from selected seed from Ontario province, Canada. Unlike the named cultivars of Juglans ailantifolia var. cordiformis, these seed-grown trees are very unlikely to produce reliable crops of nuts. Vigorous and strong, they will grow into fine large specimen trees suitable for timber production. The trees may also be used for rootstock for grafting purposes.
50-80cm €9.50 ea Available November