Katsura is a tree native to China and Japan, grown for shade in U.S. gardens and parks. Its fallen autumn leaves can smell like caramel. It is also called katsura tree.

Appearance

Growth form
In cultivation it commonly reaches 40–60 ft (12–18 m) and may grow with one trunk or several trunks.
Leaves
The round, heart-shaped leaves are 2–4 in (5–10 cm) long and grow opposite or nearly opposite each other. New leaves may be reddish purple, summer leaves are green, and fall color ranges from yellow to apricot and orange.
Flowers
Small spring flowers are easily missed; male flowers are reddish and appear before the leaves, while female flowers can appear as leaves open.
Fruit
Female trees produce clusters of small pods containing winged seeds.

Look-alikes

eastern redbudCercis canadensis

Eastern redbud (Cercis canadensis) has alternate leaves and showy pink flowers on bare twigs. Katsura leaves are usually opposite or nearly opposite, and its spring flowers are small and easy to miss.

Why they get mixed upBoth garden trees have rounded, heart-shaped leaves.

Where it lives

Typical habitats
  • parks and arboretums
  • large gardens
Range
Native to China and Japan, katsura is cultivated in the United States and has also been recorded outside cultivation in Massachusetts, New York, Ohio, and Pennsylvania.
Preferred conditions
It grows best in moist, rich, well-drained soil in full sun to partial shade. It does poorly in dry soil and hot, exposed sites and is suited to 4a–8b.

Behavior

Senses
Withering and fallen leaves may smell like burnt sugar, caramel, or ripe apples.

Life cycle

Reproduction
Male and female flowers usually grow on separate trees, and wind carries the pollen.

Growing it

Propagation
It can be grown from seed, and established trees may also send up shoots from the base.

Name and classification

Varieties and forms
Garden selections include the weeping ‘Pendula’ and ‘Morioka Weeping’, compact ‘Heronswood Globe’, and purple-leaved ‘Red Fox’.

Conservation

IUCN Red List
LCLeast ConcernLow risk of extinction
katsura (Cercidiphyllum japonicum) — identification, habitat & look-alikes | Moeyo