Uses
Edible uses
Notes
An edible oil is obtained from the seed[6][7][1], it tends to go rancid quickly.
The sweet sap is tapped in spring and can be used as a refreshing drink[6]. It can also be boiled down to a syrup or sugar, or added to maple syrup[2][6][7][8][1].Sap
Seed
Material uses
A light brown dye is obtained from the young twigs, leaves, buds and unripe fruit[7][13][14]. It does not require a mordant[13]. The leaves can also be dried and stored for later use[13]. A black dye is obtained from the young roots[15]. Plants produce chemicals which can inhibit the growth of other plants. These chemicals are dissolved out of the leaves when it rains and are washed down to the ground below, reducing the growth of plants under the tree[16][17][8]. The roots of this species produce substances that are toxic to many plant species, especially apples (Malus species), members of the Ericaceae, Potentilla spp and the white pines (certain Pinus spp.)[18][19].
Wood - coarse-grained, light, soft, not strong, very attractive[9][10][2][7]. It weighs 25lb per cubic foot[20]. It is not as valuable a crop as the black walnut (J. nigra), but is used indoors for furniture, doors etc[5].Medicinal uses(Warning!)
An infusion of the inner-bark is used as a cholagogue, febrifuge, mild laxative and stomachic[22][9][10][2][8][23][14][24]. It is effective in small doses without causing cramps[24]. The bark is best collected in the autumn[14]. Best collected in late spring according to another report[22]. An infusion of the dried outer bark is used in the treatment of toothache and dysentery[4].
The oil from the nuts is used in the treatment of tapeworms and fungal infections[22][24].Unknown part
Ecology
Ecosystem niche/layer
Ecological Functions
Nothing listed.
Forage
Nothing listed.
Shelter
Nothing listed.
Propagation
Practical Plants is currently lacking information on propagation instructions of Juglans cinerea. Help us fill in the blanks! Edit this page to add your knowledge.
Cultivation
This is the most cold-resistant of the walnuts[7], tolerating temperatures down to about -35°c in N. America when fully dormant[3]. It is less hardy in Britain, unfortunately, because the wood does not ripen so well here due to our cooler summers. The young growth in spring can be damaged by late frosts[18]. Sometimes cultivated in N. America for its edible seed, there are some named varieties[29][7][1]. Trees can come into bearing in 6 - 10 years from seed and fruiting is usually biennial[3]. The trees are quite short-lived, seldom exceeding 80 - 90 years[5]. They require about 105 frost-free days in order to ripen a crop in N. America[3]. Unfortunately, they have not proved successful as a nut tree in Britain, usually failing to produce a crop[28]. This is probably due to our cooler summers[28]. It is sometimes planted as a timber tree in Denmark and Rumania[30]. Plants produce a deep taproot and are intolerant of root disturbance. Seedlings should be planted out into their permanent positions as soon as possible and given some protection for their first few winters since they are somewhat tender when young[27][28]. Trees cast a dense shade which reduces the amount of species able to grow below them[19]. We have no specific information for this species, but the roots of several members of this genus produce substances that are toxic to many plant species, especially apples (Malus species), members of the Ericaceae, Potentilla spp and the white pines (certain Pinus spp.)[18]. The leaves of many species also secrete substances that have an inhibitory affect on plants growing underneath them. All in all this is not a very good companion plant[K]. Plants should only be pruned when they are fully dormant in winter or when they are in full leaf, otherwise any cuts will bleed profusely[18].
Hybridizes with J. ailantifolia, there are some named varieties of this hybrid that are grown for their edible seed[3].Crops
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Juglans cinerea. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Juglans cinerea.
Descendants
Cultivars
Varieties
None listed.
Subspecies
None listed.
Full Data
This table shows all the data stored for this plant.
References
- ? 1.01.11.21.31.41.5 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
- ? 2.02.12.22.32.42.52.62.72.8 Sargent. C. S. Manual of the Trees of N. America. Dover Publications Inc. New York. ISBN 0-486-20278-X (1965-00-00)
- ? 3.03.13.23.33.43.53.63.7 Natural Food Institute, Wonder Crops. 1987. ()
- ? 4.04.14.24.3 Lauriault. J. Identification Guide to the Trees of Canada Fitzhenry and Whiteside, Ontario. ISBN 0889025649 (1989-00-00)
- ? 5.05.15.25.35.4 Elias. T. The Complete Trees of N. America. Field Guide and Natural History. Van Nostrand Reinhold Co. ISBN 0442238622 (1980-00-00)
- ? 6.06.16.26.36.46.5 Turner. N. J. and Szczawinski. A. Edible Wild Fruits and Nuts of Canada. National Museum of Natural Sciences (1978-00-00)
- ? 7.07.17.27.37.47.57.67.7 Rosengarten. jnr. F. The Book of Edible Nuts. Walker & Co. ISBN 0802707699 (1984-00-00)
- ? 8.08.18.28.38.48.5 McPherson. A. and S. Wild Food Plants of Indiana. Indiana University Press ISBN 0-253-28925-4 (1977-00-00)
- ? 9.09.19.29.39.4 Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim (1959-00-00)
- ? 10.010.110.210.310.4 Usher. G. A Dictionary of Plants Used by Man. Constable ISBN 0094579202 (1974-00-00)
- ? 11.011.1 Schery. R. W. Plants for Man. ()
- ? 12.012.1 Saunders. C. F. Edible and Useful Wild Plants of the United States and Canada. Dover Publications ISBN 0-486-23310-3 (1976-00-00)
- ? 13.013.113.213.313.413.5 Buchanan. R. A Weavers Garden. ()
- ? 14.014.114.214.314.4 Weiner. M. A. Earth Medicine, Earth Food. Ballantine Books ISBN 0-449-90589-6 (1980-00-00)
- ? 15.015.1 Moerman. D. Native American Ethnobotany Timber Press. Oregon. ISBN 0-88192-453-9 (1998-00-00)
- ? 16.016.1 Philbrick H. and Gregg R. B. Companion Plants. Watkins (1979-00-00)
- ? 17.017.1 Riotte. L. Companion Planting for Successful Gardening. Garden Way, Vermont, USA. ISBN 0-88266-064-0 (1978-00-00)
- ? 18.018.118.218.318.418.518.6 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
- ? 19.019.119.2 Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. ISBN 0-304-34324-2 (1993-00-00)
- ? 20.020.1 Britton. N. L. Brown. A. An Illustrated Flora of the Northern United States and Canada Dover Publications. New York. ISBN 0-486-22642-5 (1970-00-00)
- ? 21.021.121.221.3 Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London ISBN 9-780751-303148 (1996-00-00)
- ? 22.022.122.222.3 Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
- ? 23.023.1 Mills. S. Y. The Dictionary of Modern Herbalism. ()
- ? 24.024.124.224.3 Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. ISBN 0395467225 (1990-00-00)
- ? 25.025.1 McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books ISBN 0-901361-21-6 (1985-00-00)
- ? Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co (1948-00-00)
- ? 27.027.1 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
- ? 28.028.128.228.328.4 Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray (1981-00-00)
- ? Howes. F. N. Nuts. Faber (1948-00-00)
- ? ? Flora Europaea Cambridge University Press (1964-00-00)
- ? Fernald. M. L. Gray's Manual of Botany. American Book Co. (1950-00-00)
"image:Juglans cinerea.jpg|248px" cannot be used as a page name in this wiki.