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Nicotiana glauca

Common name:	Tree Tobacco	Family:	Solanaceae
Author:	Graham.	Botanical references:	200
Synonyms:
Known Hazards:	All parts of the plant are poisonous[200].
Range:	S. America - S. Bolivia to N. Argentina. Naturalized in the Mediterranean.
Habitat:	Rocks, walls and roadsides in the Mediterranean[50].
Edibility Rating (1-5):	1	Medicinal Rating (1-5):	2

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	N. arborea[H]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Don Juan [H], Isil-pivat [H], Shrub Tobacco [MS], Tobacco, Tree [S], Tree Tobacco [S,E,H,L,B,P],
Epithets:	From a Dictionary of Botanical Epithets
	glauca = glaucous;
Systematics:	From a USDA Plants Database
	Order: Solanales. Potato family
Other Range Info:	From the Ethnobotany Database
	Ethiopia; Hawaii; Mexico; Sicily; Us; Venezuela
Noxious, Invasive and Injurious Weeds	From USDA PLANTS database, Weeds Australia , DEFRA Injurious Weeds
	Listed as noxious/invasive for: USA Invasive.

Physical Characteristics

An evergreen shrub growing to 3m by 3m . It is hardy to zone 8 and is frost tender. It is in leaf all year, in flower from August to October, and the seeds ripen from September to October. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Lepidoptera (Moths & Butterflies). We rate it 1/5 for edibility and 2/5 for medicinal use.

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

Habitats and Possible Locations

Cultivated Beds, Walls.

Edible Uses

The leaves have been made into a drink[257]. Some care should be exercised here. The tea will contain nicotine and this can be toxic to the body.

Medicinal Uses

Disclaimer

Antirheumatic; Poultice; Skin.

A poultice of the leaves can be applied to cuts, bruises, swellings and other wounds[257]. The plant has been used as a poultice for removing the pus from scrofulous sores or boils[257]. A poultice of the leaves has been applied to inflamed throat glands[257].
An infusion of the leaves has been used as a steam bath in the treatment of rheumatism[257].

Other Uses

Insecticide.

All parts of the plant contain nicotine, this has been extracted and used as an insecticide[46, 61].

Cultivation details

Prefers a well-drained deep rich moist soil in a sunny position[1, 200].
This species is hardy to about -5°c[200]. Plants can survive the winter outdoors in the milder parts of Britain, though they usually act as herbaceous perennials in such conditions[200].
Plants require more than 14 hours daylight per day in order to induce flowering[169].

Propagation

Seed - surface sow in a warm greenhouse about 10 weeks before the last expected spring frosts. The seed usually germinates in 10 - 20 days at 20°c. Keep the soil moist and pot up as soon as the plants are big enough to handle, planting them out after the last expected frosts.

Suppliers

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

Web References

[H] Details of Scandanavian and European Common names in Henriette's names database
[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.
[V] Images from the Vascular Plant Image Gallery of the Texas A&M Bioinformatics Working Group.
[B] Data (Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
[S] Image from the Southwest School of Botanical Medicine
[S] Image from the Southwest School of Botanical Medicine
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[PHARM] Phytochemical Data (common names, uses, countries) from Dr Duke's Phytochemical Database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for nicotiana glauca (a possible synonym).

[HP] PhotoFrom Henriette's plant pictures
[HP] PhotoFrom Henriette's plant pictures

References for the family Solanaceae.

[CHINA] Data Very detailed botanical/identification info. from the Flora of China.

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]).

[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.

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

[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.

[257] Moerman. D. Native American Ethnobotany Timber Press. Oregon. 1998 ISBN 0-88192-453-9
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.

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Bibliography

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
Blagdon Cross, Ashwater, Beaworthy, Devon, EX21 5DF, UK.
Website: www.pfaf.org Phone: 0845 458 4719/_44(0) 1208 872963

This page (UK) http://www.comp.leeds.ac.uk/cgi-bin/pfaf/arr_html?Nicotiana+glauca
This page (US) http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Nicotiana+glauca

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