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Japanese ivy

Hedera rhombea

Japanese ivy
Photo: Qwert1234, Public domain

Japanese ivy (Hedera rhombea), also called songak, is an evergreen climbing ivy native to East Asia that clings to trees and walls with aerial rootlets, and can also be grown as ground cover. It is grown mainly for its glossy, diamond-shaped leaves in temperate gardens.

Family
Araliaceae (Ivy family)
Grows as
Tree
Light
Part shade, Shade
Water
Keep soil evenly moist in the growing season and let the top layer dry slightly between waterings.
Soil
Moist, well-drained, fertile loam or leaf mould.
Temperature
10–25 °C; hardy to about -10 °C in mild winters, protect from hard frost.
How easy
Easy
Safety
Toxic: Stems are poisonous if eaten and the sap is irritating to skin and mouth, as with other ivies.
Native range
Temp. E. Asia
Climate
temperate

About

Hedera rhombea, the Japanese ivy or songak, is a species of ivy in the Araliaceae family native to East Asia. It is native to Japan, the Korean Peninsula, the Ryukyu Islands, and Taiwan, where it is common on rocky slopes and growing up the trunks of trees, especially in laurel forest, a type of cloud forest.

Other Hedera plants

Algerian Ivy · Azores Ivy · Canary Ivy · Colchis ivy · Hedera crebrescens · Hedera cypria · Common Ivy · Atlantic Ivy · Hedera iberica · Hedera maderensis · Hedera maroccana · Himalayan Ivy

Text excerpted from the Wikipedia article Hedera rhombea by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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