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Rhododendron molle

Common name: Chinese Azalea Family: Ericaceae
Author: (Blume.)G.Don. Botanical references: 11, 200
Synonyms: Rhododendron sinense ((Lodd.)Sw.), Azalea sinensis (Lodd.), Azalea mollis (Blume.)
Known Hazards: The plant is very toxic[147]. The pollen of many if not all species of rhododendrons is also probably toxic, being said to cause intoxication when eaten in large quantities[183].
Range: E. Asia - China.
Habitat: Grows amongst coarse grasses and shrubs, also in thin pine woods[11].
Edibility Rating (1-5): 0Medicinal Rating (1-5):1

Other Possible Synonyms:From various places across the web, may not be correct. See below.
Azalea japonica[G] R. japonicum[G] R. japonicum var. glaucophyllum[G] R. molle subsp. japonicum[G]
Epithets:From a Dictionary of Botanical Epithets
molle = soft
Systematics:From a USDA Plants Database
Order: Ericales. Heath family
Other Range Info: From the Ethnobotany Database
China

Physical Characteristics

A decidious shrub growing to 2.5m. It is hardy to zone 7. It is in flower in May. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. We rate it 0/5 for edibility and 1/5 for medicinal use.

The plant prefers light (sandy) and medium (loamy) soils and requires well-drained soil. The plant prefers acid soils and can grow in very acid soil. It can grow in semi-shade (light woodland). It requires moist soil.

Habitats and Possible Locations

Woodland, Dappled Shade, Shady Edge.

Edible Uses

None known

Medicinal Uses

Disclaimer

Anaesthetic Analgesic Sedative.

The flowers are analgesic, anaesthetic and sedative[218]. They are applied externally in the treatment of arthritis, caries, itch, maggots and traumatic injuries[218].
The root is used in the treatment of arthritis, rheumatism and traumatic injuries[218].

Other Uses

Insecticide.

The powdered flowers have a mild insecticidal effect[57].

Cultivation details

Succeeds in a most humus-rich lime-free soils except those of a dry arid nature or those that are heavy or clayey[1]. Prefers a peaty or well-drained sandy loam[1]. Succeeds in sun or shade, though it prefers a shady position[1]. A pH between 4.5 and 5.5 is ideal[1].
Succeeds in a woodland though, because of its surface-rooting habit[200], it does not compete well with surface-rooting trees[1]. Plants need to be kept well weeded, they dislike other plants growing over or into their root system, in particular they grow badly with ground cover plants, herbaceous plants and heathers[200].
Plants form a root ball and are very tolerant of being transplanted, even when quite large, so long as the root ball is kept intact[200].
A very ornamental plant[1], it is the parent of many cultivars[11].
Plants in this genus are notably susceptible to honey fungus[200].

Propagation

Seed - best sown in a greenhouse as soon as it is ripe in the autumn and given artificial light. Alternatively sow the seed in a lightly shaded part of the warm greenhouse in late winter or in a cold greenhouse in April. Surface-sow the seed and do not allow the compost to become dry[200]. Pot up the seedlings when they are large enough to handle and grow on in a greenhouse for at least the first winter.
Layering in late July. Takes 15 - 24 months[78].
Cuttings of half-ripe wood, August in a frame. Difficult[78].

Cultivars

''
There are some named forms for this species, but these have been developed for their ornamental value and not for their other uses. Unless you particularly require the special characteristics of any of these cultivars, we would generally recommend that you grow the natural species for its useful properties. We have, therefore, not listed the cultivars in this database[K].

Suppliers

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

Web References

References for Rhododendron molle subsp. japonicum (a possible synonym).
  • [G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
References for Rhododendron sinense (a possible synonym).

References for the family Ericaceae.

See the PFAF Links Pages for other sources.

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

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[57] Schery. R. W. Plants for Man.
Fairly readable but not very comprehensive. Deals with plants from around the world.

[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.

[147] ? A Barefoot Doctors Manual. Running Press ISBN 0-914294-92-X
A very readable herbal from China, combining some modern methods with traditional chinese methods.

[183] Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications 1990 ISBN 0-9628087-0-9
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.

[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.

[218] Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. 1985 ISBN 0-917256-20-4
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.


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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
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