Katsura (Cercidiphyllum) is a genus of two tree species from Japan and China, grown mainly for its heart-shaped leaves, bright autumn colour and sweet caramel scent. The key to growing it is deep, consistently moist soil, since it is very sensitive to drought.
Family
Cercidiphyllaceae (Cercidiphyll family)
Light
Full sun, Part shade
Water
Keep soil consistently moist, especially in dry spells, as drought causes leaf drop.
Soil
Deep, fertile, moisture-retentive soil, slightly acidic to neutral.
Temperature
Hardy in cool temperate climates; protect young trees from late frost and harsh winds.
How easy
Moderate
About
Cercidiphyllum is a genus containing two species of plants, both commonly called katsura. They are the sole members of the monotypic family Cercidiphyllaceae. The genus is native to Japan and China and unrelated to Cercis (redbuds).
How to grow it
Katsura is grown as an ornamental tree for its delicate heart-shaped leaves and bright autumn colour, a mix of bright yellow, pink and orange-red. Where conditions are suitable, it is fast-growing, but it is very sensitive to drought and needs deep, permanently moist soil. Under drought conditions, the species will abscise its leaves; however refoliation may occur once water is made available. Of particular interest is the scent produced by the leaves in the autumn, resembling burnt brown sugar or cotton candy. Trees in cultivation, like those in natural environments, tend to sucker from the base when young and become multi-stemmed at maturity; pruning to maintain a single stem is not advised.
Within Cercidiphyllum japonicum, several cultivars with pendulous branches are grown for their unique weeping habit. Two general types exist. Those with a strong central leader, or excurrent growth, are all one clone originating in Morioka City, Japan. This cultivar is known as 'Morioka Weeping' and can reach over 25 m (82 ft) in height.
Uses
Katsura wood is often used to make gobans, i.e. boards for the game Go.
Text excerpted from the Wikipedia article Cercidiphyllum 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.