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Rubus frondosus

Common name:	Yankee Blackberry	Family:	Rosaceae
Author:	Bigelow.	Botanical references:	43, 200
Synonyms:
Known Hazards:	None known
Range:	Eastern N. America - Massachusetts to Indiana.
Habitat:	Thickets and borders of woods[43]. Mainly found in dry soils[235].
Edibility Rating (1-5):	2	Medicinal Rating (1-5):	1

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	R. brainerdii[B,P] R. cardianus[B,G,P] R. difformis[B,P] R. eriensis[B,P] R. heterogeneous[B,P] R. nescius[B,P] R. pauxillus[B,P] R. pensilvanicus var. frondosus[B,P] R. pratensis[B,P] R. sativus[B,P] R. uniquus[B,P] R. villosus var. frondosus[G] R. wahlii[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Yankee Blackberry [P,B],
Epithets:	From a Dictionary of Botanical Epithets
	frondosus = leafy;
Systematics:	From a USDA Plants Database
	Order: Rosales. Rose family
Noxious, Invasive and Injurious Weeds	From USDA PLANTS database, Weeds Australia , DEFRA Injurious Weeds
	Listed as noxious/invasive for: Tasmaina.

Physical Characteristics

A decidious shrub growing to 0.8m. It is hardy to zone 5. It is in flower in June. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Apomictic (reproduce by seeds formed without sexual fusion). The plant is self-fertile. We rate it 2/5 for edibility and 1/5 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 can grow in semi-shade (light woodland) or no shade. It requires dry or moist soil.

Habitats and Possible Locations

Woodland, Sunny Edge, Dappled Shade.

Edible Uses

Fruit.

Fruit - raw or cooked[105, 142, 161, 171, 257]. The berries have been cooked, shaped into little cakes and then dried for winter use[257].

Medicinal Uses

Disclaimer

Emmenagogue; Pectoral.

A decoction of the root has been used to restore the menstrual flow and to treat lung problems[257].

Other Uses

Dye.

A purple to dull blue dye is obtained from the fruit[168].

Cultivation details

Easily grown in a good well-drained loamy soil in sun or semi-shade[1, 11, 200].
Cultivated for its edible fruit in N. America[142, 171].
This species is a blackberry with biennial stems, it produces a number of new stems each year from the perennial rootstock, these stems fruit in their second year and then die[200].
The plant produces apomictic flowers, these produce fruit and viable seed without fertilization, each seedling is a genetic copy of the parent[200].
Plants in this genus are notably susceptible to honey fungus[200].

Propagation

Seed - requires stratification and is best sown in early autumn in a cold frame. Stored seed requires one month stratification at about 3°c and is best sown as early as possible in the year. Prick out the seedlings when they are large enough to handle and grow on in a cold frame. Plant them out into their permanent positions in late spring of the following year.
Cuttings of half-ripe wood, July/August in a frame[200].
Tip layering in July. Plant out in autumn.
Division in early spring or just before leaf-fall in the autumn[200].

Suppliers

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

Web References

[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.
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

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.

[43] Fernald. M. L. Gray's Manual of Botany. American Book Co. 1950
A bit dated but good and concise flora of the eastern part of N. America.

[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.

[142] Brouk. B. Plants Consumed by Man. Academic Press 1975 ISBN 0-12-136450-x
Readable but not very comprehensive.

[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237. U.S. Depf of Agriculture.
A comprehensive but very terse guide. Not for the casual reader.

[168] Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974 ISBN 0-02-544950-8
A very good and readable book on dyeing.

[171] Hill. A. F. Economic Botany. The Maple Press 1952
Not very comprehensive, but it is quite readable and goes into some a bit of detail about the plants it does cover.

[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.

[235] Britton. N. L. Brown. A. An Illustrated Flora of the Northern United States and Canada Dover Publications. New York. 1970 ISBN 0-486-22642-5
Reprint of a 1913 Flora, but still a very useful book.

[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?Rubus+frondosus
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