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Cotinus coggygria - Scop.

Smoke Tree

Author	Scop.	Botanical references	11, 50, 200
Family	Anacardiaceae	Genus	Cotinus
Synonyms	Rhus cotinus - L.
Known Hazards	Skin contact with this plant can cause dermatitis in sensitive people[200]. Though related to several poisonous species, this species is definitely not poisonous[65].
Range	S. Europe to W. Asia.
Habitat	Dry hillsides, rocky places and open woods, usually on limestone, to 1300 metres[45, 50, 89].
Edibility Rating	1 (1-5)	Medicinal Rating	1 (1-5)

Physical Characteristics

A decidious Shrub growing to 5m by 5m at a medium rate.

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

Habitats

Woodland Garden; Dappled Shade; Shady Edge;

Edible Uses

Edible Parts: Leaves.

Leaves[2, 179]. They are possibly edible[105, 177]. Some caution is advised. A volatile oil in the leaves contains pinene and camphene[179]. One report suggests that the essential oil contained in the flowers and leaves has a mango-like odour[158]. We have tried these leaves and really would not recommend them to anyone[K].

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.

Cholagogue; Febrifuge; Ophthalmic.

The yellow wood is used as a cholagogue, febrifuge and for eye ailments[218].

Other Uses

Basketry; Dye; Essential; Tannin; Wood.

An essential oil is obtained from the leaves and flowers[105]. It has a mango-like smell[158]. Is it edible[K]? A yellow to orange dye is obtained from the root and stem[1, 4, 11, 14, 57]. It is somewhat fugitive though[4]. The leaves and bark are a good source of tannins[46, 61, 158]. Wood - ornamental. Used for cabinet making, picture frames[158]. The twigs are used in basketry[158].

Scented Plants

:

Cultivation details

Tolerates most soils[202]. Prefers a well-drained dry or moist soil in a sunny position[108, 200], doing better in a soil that is not very rich[11, 49]. Prefers a fertile but not over-rich soil[188]. Tolerates light shade[188]. Established plants are drought tolerant. Plants are hardy to about -20°c[184], though die-back often occurs at the tips of shoots during the winter[202]. Plants are slow to establish but are then quite fast growing when young though they slow down with age[202]. Hybridizes with C. obovatus[182]. A number of cultivars have been developed for their ornamental value[182, 200]. The purple-leafed cultivars are susceptible to mildew[202]. Plants flower on wood that is at least 3 years old[202]. Any pruning is best done in the spring[202]. Branches sometimes wilt, especially after hard pruning, and these should be removed[182]. This species is notably resistant to honey fungus[88, 200]. Dioecious. Male and female plants must be grown if seed is required.

Propagation

Seed - best sown as soon as it is ripe in a cold frame[78, 113, 200]. It should germinate in the spring. Slightly immature or 'green' seed, harvested when it has fully developed but before it dries on the plant, gives the best results[113]. Warm stratify stored seed for 2 - 3 months at 15°c, then cold stratify for 2 - 3 months[164]. Germination can be very slow, often taking 12 months or more at 15°c[164]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the cold frame for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. The seed has a long viability and should store for several years[113]. Cuttings of half-ripe wood, July/August in a frame[113]. Trench layering in spring[200].

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].

Links

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]).

[2] Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972 ISBN 0-486-20459-6
Lots of entries, quite a lot of information in most entries and references.

[4] Grieve. A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9
Not so modern (1930's?) but lots of information, mainly temperate plants.

[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.

[14] Holtom. J. and Hylton. W. Complete Guide to Herbs. Rodale Press 1979 ISBN 0-87857-262-7
A good herbal.

[45] Polunin. O. Flowers of Greece and the Balkans. Oxford University Press 1980 ISBN 0-19-217626-9
A good pocket flora, it also lists quite a few plant uses.

[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.

[49] Arnold-Forster. Shrubs for the Milder Counties. 0
Trees and shrubs that grow well in Cornwall and other mild areas of Britain. Fairly good, a standard reference book.

[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.

[57] Schery. R. W. Plants for Man. 0
Fairly readable but not very comprehensive. Deals with plants from around the world.

[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.

[65] Frohne. D. and Pfänder. J. A Colour Atlas of Poisonous Plants. Wolfe 1984 ISBN 0723408394
Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far.

[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.

[88] RHS. The Garden. Volume 112. Royal Horticultural Society 1987
Snippets of information from the magazine of the RHS. In particular, there are articles on plants that are resistant to honey fungus, oriental vegetables, Cimicifuga spp, Passiflora species and Cucurbits.

[89] Polunin. O. and Huxley. A. Flowers of the Mediterranean. Hogarth Press 1987 ISBN 0-7012-0784-1
A very readable pocket flora that is well illustrated. Gives some information on plant uses.

[105] Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976
The most comprehensive guide to edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.

[108] International Bee Research Association. Garden Plants Valuable to Bees. International Bee Research Association. 1981
The title says it all.

[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.

[158] Gupta. B. L. Forest Flora of Chakrata, Dehra Dun and Saharanpur. Forest Research Institute Press 1945
A good flora for the middle Himalayan forests, sparsly illustrated. Not really for the casual reader.

[164] Bird. R. (Editor) Growing from Seed. Volume 4. Thompson and Morgan. 1990
Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.

[177] Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books 1984 ISBN 3874292169
An excellent book for the dedicated. A comprehensive listing of latin names with a brief list of edible parts.

[179] Reid. B. E. Famine Foods of the Chiu-Huang Pen-ts'ao. Taipei. Southern Materials Centre 1977
A translation of an ancient Chinese book on edible wild foods. Fascinating.

[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.

[188] Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. 1990 ISBN 0-86318-386-7
Excellent range of photographs, some cultivation details but very little information on plant uses.

[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.

[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.

Readers Comments

Plants for a Future does not verify the accuracy of reader comments, use at your own risk. In particular Plants For A Future can not take any responsibility for any adverse effects from the use of plants. You should always consult a professional before using plants medicinally.

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