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Rosa banksiae

Common name: Banksia Rose Family: Rosaceae
Author: W.T.Aiton. Botanical references: 11, 109, 200
Synonyms:  
Known Hazards: There is a layer of hairs around the seeds just beneath the flesh of the fruit. These hairs can cause irritation to the mouth and digestive tract if ingested.
Range: E. Asia - China. Naturalized in Austria and Germany[50].
Habitat: Growing into trees or hanging down ravines and rocky places to altitudes of 1000 metres in W. China[109, 260].
Edibility Rating (1-5): 2Medicinal Rating (1-5):1

Systematics:From a USDA Plants Database
Order: Rosales. Rose family
Other Range Info: From the Ethnobotany Database
China

Physical Characteristics

A decidious shrub growing to 10m by 12m at a fast rate. It is hardy to zone 7. It is in flower from May to June. The scented flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees. We rate it 2/5 for edibility and 1/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in heavy clay soil. The plant prefers acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It requires moist soil.

Habitats and Possible Locations

Sunny Edge, Dappled Shade.

Edible Uses

Fruit Seed.

Fruit - raw or cooked. The fruit is about 7mm in diameter[200], but there is only a thin layer of flesh surrounding the many seeds[K]. Some care has to be taken when eating this fruit, see the notes above on known hazards.
The seed is a good source of vitamin E, it can be ground and mixed with flour or added to other foods as a supplement[102, 183]. Be sure to remove the seed hairs[102].

Medicinal Uses

Disclaimer

Anthelmintic Astringent Bitter Cancer Tonic Vulnerary.

The plant is rich in tannins and is used as an astringent[218].
The root is anthelmintic, astringent, bitter and tonic[240].
The leaves are said to be a good vulnerary[240].
The fruit of many members of this genus is a very rich source of vitamins and minerals, especially in vitamins A, C and E, flavanoids and other bio-active compounds. It is also a fairly good source of essential fatty acids, which is fairly unusual for a fruit. It is being investigated as a food that is capable of reducing the incidence of cancer and also as a means of halting or reversing the growth of cancers[214].

Other Uses

Dye Preservative Tannin.

Tannin obtained from the root bark is used as a brown dye for rope and also to preserve and strengthen rope that is to be immersed in water[46, 61, 109].

Cultivation details

Succeeds in most soils[11], preferring a circumneutral soil[200]. Grows well in heavy clay soils. Dislikes water-logged soils[200]. Requires a very sunny position if it s to flower well[11, 245].
This species does not thrive in the cooler moister parts of Britain, growing best in the south-east of the country[11]. It is best given a position on a sunny sheltered wall[219].
A very ornamental plant[1]. After planting out, it takes a few years to settle down and commence flowering[219]. Flowers are produced mainly on wood that is 2 - 3 years old[219]. The flowers have a violet-like perfume[245].
Grows well with alliums, parsley, mignonette and lupins[18, 20]. Garlic planted nearby can help protect the plant from disease and insect predation[18, 20]. Grows badly with boxwood[18].
Hybridizes freely with other members of this genus[80].
Plants in this genus are notably susceptible to honey fungus[200].

Propagation

Seed. Rose seed often takes two years to germinate. This is because it may need a warm spell of weather after a cold spell in order to mature the embryo and reduce the seedcoat[80]. One possible way to reduce this time is to scarify the seed and then place it for 2 - 3 weeks in damp peat at a temperature of 27 - 32° c (by which time the seed should have imbibed). It is then kept at 3° c for the next 4 months by which time it should be starting to germinate[80]. Alternatively, it is possible that seed harvested 'green' (when it is fully developed but before it has dried on the plant) and sown immediately will germinate in the late winter. This method has not as yet(1988) been fully tested[80]. Seed sown as soon as it is ripe in a cold frame sometimes germinates in spring though it may take 18 months. Stored seed can be sown as early in the year as possible and stratified for 6 weeks at 5° c[200]. It may take 2 years to germinate[200]. Prick out the seedlings into individual pots when they are large enough to handle. Plant out in the summer if the plants are more than 25cm tall, otherwise grow on in a cold frame for the winter and plant out in late spring.
Cuttings of half-ripe wood with a heel, July in a shaded frame. Overwinter the plants in the frame and plant out in late spring[78]. High percentage[78].
Cuttings of mature wood of the current seasons growth. Select pencil thick shoots in early autumn that are about 20 - 25cm long and plant them in a sheltered position outdoors or in a cold frame[78, 200]. The cuttings can take 12 months to establish but a high percentage of them normally succeed[78].
Division of suckers in the dormant season. Plant them out direct into their permanent positions.
Layering. Takes 12 months[11].

Scent

Flowers: Fresh
The flowers have a violet-like perfume[245].

Cultivars

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No entries have been made for this species as yet

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.

[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.

[18] Philbrick H. and Gregg R. B. Companion Plants. Watkins 1979
Details of beneficial and antagonistic relationships between neighbouring plants.

[20] Riotte. L. Companion Planting for Successful Gardening. Garden Way, Vermont, USA. 1978 ISBN 0-88266-064-0
Fairly good.

[46] Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim 1959
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.

[50] ? Flora Europaea Cambridge University Press 1964
An immense work in 6 volumes (including the index). The standard reference flora for europe, it is very terse though and with very little extra information. Not for the casual reader.

[61] Usher. G. A Dictionary of Plants Used by Man. Constable 1974 ISBN 0094579202
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.

[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.

[80] McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books 1985 ISBN 0-901361-21-6
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.

[102] Kavasch. B. Native Harvests. Vintage Books 1979 ISBN 0-394-72811-4
Another guide to the wild foods of America.

[109] Wilson. E. H. Plantae Wilsonae.
Details of the palnts collected by the plant collector E. H. Wilson on his travels in China. Gives some habitats. Not for the casual reader.

[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.

[214] Matthews. V. The New Plantsman. Volume 1, 1994. Royal Horticultural Society 1994 ISBN 1352-4186
A quarterly magazine, it has articles on Himalayacalamus hookerianus, hardy Euphorbias and an excellent article on Hippophae spp.

[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.

[219] Grey-Wilson. C. & Matthews. V. Gardening on Walls Collins 1983 ISBN 0-00-219220-0
A nice little book about plants for growing against walls and a small section on plants that can grow in walls.

[240] Chopra. R. N., Nayar. S. L. and Chopra. I. C. Glossary of Indian Medicinal Plants (Including the Supplement). Council of Scientific and Industrial Research, New Delhi. 1986
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.

[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.

[260] Phillips. R. & Rix. M. Conservatory and Indoor Plants Volumes 1 & 2 Pan Books, London. 1998 ISBN 0-330-37376-5
Excellent photos of over 1,100 species and cultivars with habits and cultivation details plus a few plant uses. Many species are too tender for outdoors in Britain though there are many that can be grown outside.


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