Celastrus orbiculatus Thunb.
Celastrus orbiculatus is a climber.
Celastrus orbiculatus was described by Carl Peter Thunberg in 1784. The name is considered as validly published.
The comparatively fast-growing climbers have a columnar habit and form thickets. They reach heights of 12 to 14 metres and spread rapidly. The main growing season is in spring and summer.
Celastrus orbiculatus is deciduous. The dark-green, simple leaves are alternate. They are elliptic, crenate and petiolate. They turn an attractive yellow in autumn.
Flowers and Fruits
Celastrus orbiculatus produces cymes of light-green five-stellate flowers from June to August.
From summer to autumn the climbers carry an abundance of ornamental orange fruits.
The plants form shallow roots.
Celastrus orbiculatus is native to China, Manchuria, Japan and Sakhalin and is naturalized in the eastern US.
The climbers prefer a sunny to half-shady situation on moderately moist soil. They prefer sandy-loamy, gritty-loamy or sandy clay soil with a pH between 5 and 7,5. The plants need a soil depth of at least 46 centimetres for good growth. They tolerate temperatures down to -29Â°C (USDA zone 5) and need a frost-free period of at least 14 weeks.
Classification after Prof. Dr. Sieber
- open areas
Tolerance of special soil conditions
- none: soil salinity, anaerobic soil
- medium: drought, calcareous soil
The ornamental value of Celastrus orbiculatus lies especially in the attractive autumn aspect and the ornamental leaves. The recommended planting distance is 90 to 180 centimetres. Suited as bird pasture and as plant providing shelter for birds.
Maintenance and Propagation
Propagate by sowing. The seeds require vernalization.
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.