Key Facts
- Deciduous ornamental tree native to Japan and parts of China
- Leaves are rounded to heart shaped and often give off a sweet, caramellike scent in autumn
- Trees are dioecious with small inconspicuous spring flowers
- Valued for spring foliage and striking fall color
- Prefers moist fertile soils and tolerates clay and seasonally wet sites
- Plants perform best in full sun to part shade with some afternoon shade in hot climates
- Commonly propagated by seed, cuttings, and grafting for named cultivars
Katsura Tree (Cercidiphyllum japonicum) is a graceful deciduous ornamental prized for heart shaped leaves and dramatic fall color. It works well as a specimen or park tree where its broad canopy and autumn scent can be enjoyed, but it needs space and reliable moisture to stay healthy.
Identification
Leaves are rounded to heart shaped and often turn vivid colors in autumn while releasing a sweet, caramel like scent. Flowers are small and inconspicuous in spring and the species is dioecious so individual trees bear either male or female flowers. Overall form is upright with a spreading canopy as the tree matures.
Where to grow and best uses
Use Katsura as a specimen, in mixed shade trees or beside water features where soil stays reliably moist. Hardy in USDA zones 4 to 8, it performs best in full sun to part shade with some afternoon shade in hot inland climates to reduce leaf scorch. It tolerates heavy clay and seasonally wet sites.
Size and spacing
In cultivation expect a medium to large tree typically about 30 to 60 feet tall with a 30 to 40 foot spread depending on cultivar and site. Allow planting space at least equal to the mature spread to avoid crowding and to preserve the tree’s natural shape and air circulation.
Planting and watering
Plant in moist, fertile, well drained soil and avoid prolonged drought which commonly causes leaf scorch and early drop. Long term saturation reduces vigor so choose a site that is moist but not permanently waterlogged. Monitor soil moisture during dry spells until the tree is established.
Pruning and after flowering care
Flowers are produced in spring and are not the main ornamental feature, so pruning is mainly for structure and clearance. Prune after flowering to remove crossing branches and to maintain a balanced canopy. Avoid heavy pruning in late summer or autumn which can stress the tree before winter.
Propagation
Propagate Katsura by seed, by cuttings or by grafting for named cultivars. Seed often benefits from cold stratification and rooted cuttings are used for clonal propagation. Follow cultivar specific protocols when propagating for consistent results in a nursery setting.
Frequently asked questions
- How fast does Katsura Tree grow?
- Growth rate varies with soil, water and climate. In favorable conditions it can establish relatively quickly and eventually reach the typical 30 to 60 foot mature height over time, while poorer sites slow development.
- When does Katsura Tree bloom?
- Small, inconspicuous flowers appear in spring. In the Northern Hemisphere this typically occurs in April to May though exact timing shifts with local climate.
- Is it suitable for small gardens?
- Because mature size and spread are large, Katsura is better suited to parks and larger yards; planting in small gardens risks crowding and shading of nearby plants.
- Does it need special soil?
- It prefers moist, fertile, slightly acidic to neutral soil and tolerates clay and seasonally wet sites. Avoid prolonged drought or permanently waterlogged conditions to keep foliage healthy.
- Is Katsura Tree fragrant?
- Yes. The leaves often give off a sweet, caramel like scent in autumn that many gardeners find appealing.
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