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Distylium racemosum - Siebold.&Zucc.

Common Name Isu Tree
Family Hamamelidaceae
USDA hardiness 7-10
Known Hazards None known
Habitats Evergreen oak forests. Forests at elevations of 1000 - 1300 metres in Fujian, Hainan, Taiwan and Zhejiang Provinces of China[266].
Range E. Asia - China, Japan.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Frost Hardy Moist Soil Semi-shade
Distylium racemosum Isu Tree


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Distylium racemosum Isu Tree

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Summary


Physical Characteristics

 icon of manicon of shrub
Distylium racemosum is an evergreen Shrub growing to 2 m (6ft) by 3 m (9ft) at a slow rate.
It is hardy to zone (UK) 8 and is frost tender. It is in leaf 12-Jan It is in flower from Mar to April, and the seeds ripen from Jun to August. The species is hermaphrodite (has both male and female organs) Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland). It prefers moist soil.

Synonyms

Habitats

Woodland Garden Dappled Shade; Shady Edge;

Edible Uses

None known

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.



None known

Other Uses

Porcelain;  Wood.

The ashes of the wood are used in glazing porcelain[46, 61]. Wood - hard, fine-grained, dark brown. A very valuable wood, it is used for small articles, musical instruments etc[11, 46, 61].

Cultivation details

Prefers a sandy soil[1]. A lime tolerant plant, but it prefers a neutral to acid moist humus-rich soil[130, 182]. It prefers to grow under a light woodland canopy[130, 200]. Plants are hardy at Kew[11] but they grow better in the milder areas of Britain[1]. They rarely exceed 2 metres in height in cultivation and are slow growing[11]. The dormant plant is fairly cold-tolerant, but the young growth in spring is subject to damage by late frosts[130].

Propagation

Seed - can be sown as soon as it is ripe in a cold frame. Stored seed may require 2 - 3 months cold stratification and is best sown as soon as possible in a cold frame[175]. Germination takes 2 - 3 months or more at 15°c[175]. 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. Cuttings of half ripe wood, July/August in a frame[130]. Cuttings of mature wood of the current year's growth in a frame[113]. Layering in September/October of current years growth if possible. If this is not available then use the previous years growth. Takes 18 months. Good percentage[78].

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants

 

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Expert comment

Author

Siebold.&Zucc.

Botanical References

11200266

Links / References

For a list of references used on this page please go here

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Subject : Distylium racemosum  
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