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Philadelphus delavayi

Common name:   Family: Hydrangeaceae
Author: Henry. Botanical references: 200, 266
Synonyms:  
Known Hazards: None known
Range: E. Asia - China to N.E. Burma.
Habitat: Scrub and by streams, 700 - 3800 metres in Sichuan and Xizang[184]. Mixed forests, thickets, mountain slopes 700 - 3800 metres in Sichuan,Xizang and Yunnan[266].
Edibility Rating (1-5): 0Medicinal Rating (1-5):0

Systematics:From a USDA Plants Database
Order: Rosales. Hydrangea family

Physical Characteristics

A decidious shrub growing to 4m by 3m . It is hardy to zone 6. It is in flower from June to July. The scented flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. We rate it 0/5 for edibility and 0/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay and nutritionally poor soils. The plant prefers acid, neutral and basic (alkaline) soils and can grow in very alkaline soil. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Hedge, Woodland, Sunny Edge.

Edible Uses

None known

Medicinal Uses

Disclaimer

None known

Other Uses

Hedge Soap.

The leaves are rich in saponins[169], when crushed and mixed with water they produce a lather that is an effective cleaner, used on the body, clothes etc. You can wash your hands by merely picking a couple of leaves or a bunch of blossom, wetting your hands and then rubbing the plant material vigorously as if it was a bar of soap[K]. This soap is a very gentle cleaner that does not remove the body's natural oils, but does remove dirt. It is not very effective against oil[K].
Plants can be grown as an informal hedge or screen[200].

Cultivation details

An easily grown plant, succeeding in any moderately fertile soil, and also in thin soils over chalk[200]. Grows well in heavy clay soils. Tolerates poor soils[200]. Succeeds in semi-shade but prefers a position in full sun where it will flower more freely[182, 200]. Grows well on the woodland edge or in a glade[200].
Hardy to about -15° c[184].
Some named forms have been developed for their ornamental value[182]. The flowers are sweetly orange-scented[245].
Plants are very tolerant of pruning, one third of the stems can be cut down to the ground each year in order to promote fresh growth and heavier flowering[202].

Propagation

Seed - best if given 1 months cold stratification[113]. Sow February in a light position in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for 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, 7 - 10cm long side-shoots, July/August in a shaded frame. Plant out in spring. High percentage[78].
Cuttings of mature wood of the current year's growth, 15 - 25cm with a heel, December in a sheltered bed outdoors. Fair to good percentage[78].
Layering in summer. Very easy.

Scent

Flowers: Fresh
The flowers are sweetly orange-scented[245].

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[78] Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.

[113] Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press 1987 ISBN 0942375009
A very detailed book on propagating trees. Not for the casual reader.

[169] Buchanan. R. A Weavers Garden.
Covers all aspects of growing your own clothes, from fibre plants to dyes.

[182] Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray 1992 ISBN 0-7195-5043-2
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.

[184] Phillips. R. & Rix. M. Shrubs. Pan Books 1989 ISBN 0-330-30258-2
Excellent photographs and a terse description of 1900 species and cultivars.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[202] Davis. B. Climbers and Wall Shrubs. Viking. 1990 ISBN 0-670-82929-3
Contains information on 2,000 species and cultivars, giving details of cultivation requirements. The text is terse but informative.

[245] Genders. R. Scented Flora of the World. Robert Hale. London. 1994 ISBN 0-7090-5440-8
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.

[266] Flora of China 1994
On-line version of the Flora - an excellent resource giving basic info on habitat and some uses.


Readers Comments


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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
WEB search engine by Rich Morris - Home Page- Contact Info
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