🌿 Morphology
🌞 Growing conditions
🌍 Origin and family
🌾 Uses
Warning: Despite the care taken in writing this sheet, it is essential to cross-reference sources before using or consuming any plant. When in doubt, consult a qualified professional
Permaculture uses
While not commonly used in permaculture, Pterocarya rhoifolia can be used as a shade tree in large-scale systems. The nuts are technically edible but are small and have a thick husk, making them less desirable than other nut species. The wood can be used for woodworking.
Permapeople description
Pterocarya rhoifolia, commonly known as Japanese Wingnut, is a large deciduous tree native to Japan. It is characterized by its pinnately compound leaves and winged nuts that hang in long catkins. It prefers moist, well-drained soil and full sun to partial shade.
Botanical description
Pterocarya rhoifolia is a large deciduous tree growing to 30 meters (98 feet) tall, typically found in riparian forests. The leaves are pinnately compound, 20–40 centimeters (8–16 inches) long, with 11–21 leaflets. The leaflets are ovate-lanceolate, 5–12 centimeters (2–5 inches) long and 2–4 centimeters (0.8–1.6 inches) broad, with a serrated margin and an acuminate apex. The flowers are wind-pollinated catkins. The fruit is a small nut, 1–2 centimeters (0.4–0.8 inches) in diameter, with two semicircular wings 2–3 centimeters (0.8–1.2 inches) broad. The bark is gray and furrowed. It is native to Japan.
Companion planting
As a large tree, consider its mature size when planting near other species. Deep-rooted species are suitable companions. Avoid planting it near plants that require full sun as it provides significant shade.
Propagation methods
Seed propagation is the most common method. Seeds require stratification. Cuttings are possible, but less reliable.
History and traditions
In Japan, the wood has been traditionally used in construction and for making furniture. It is not known to have extensive traditional medicinal uses.
Usage calendar
Flowering occurs in spring (April-May). Fruits mature in autumn (September-October). Seed collection is best in late autumn. Planting is best done in early spring or late autumn.