Common Name:

General Information

Koelreuteria bipinnata is a deciduous tree growing up to 20 metres tall[].
The tree has potential in the phytoremediation of soils contaminated with heavy metals[].

Known Hazards

None known

Botanical References

Range

E. Asia - southern China (Guangdong, Guangxi, Guizhou, Hubei, Hunan, Sichuan, Yunnan)

Habitat

Sparse forests, slopes; at elevations from 400 - 2,500 metres[].

Properties

Habit	Deciduous Tree
Height	15.00 m

Cultivation Details

Not known

Edible Uses

None known

Medicinal

None known

Agroforestry Uses:

The tree has proven to be effective in the phytoremediation of manganese contaminated soils, growing quickly and concentrating manganese in its aerial parts[].

Other Uses

None known

Propagation

The seed requires a period of cold stratification. It is probably best sown as soon as it is ripe in a cold frame[]. Pre-soak stored seed for 24 hours in warm water. If it swells up then sow it in a cold frame. If it does not swell then soak it for a further 24 hours in hot water prior to sowing. This should cause the seed to swell but, should this fail, scarification (taking care not to damage the seed embryo) followed by a further 24 hours in warm water should do the trick[]. Germination is usually good[], though the seedlings are very variable[]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Consider giving the plants some protection from the cold for their first winter outdoors[].
Root cuttings, 4cm taken in December. Plant horizontally in individual pots in a warm greenhouse[].