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Carya cordiformis - (Wangenh.)K.Koch.

Bitternut

Author	(Wangenh.)K.Koch.	Botanical references	11, 43, 200
Family	Juglandaceae	Genus	Carya
Synonyms	Hicoria cordiformis - (Wangenh.)Britton. Juglans cordiformis - Wangenh.
Known Hazards	None known
Range	Eastern N. America - Maine to Quebec and south to Florida.
Habitat	Low wet to dry woods, stream banks and borders of swamps[43, 82], tolerating a range of soils[229].
Edibility Rating	3 (1-5)	Medicinal Rating	1 (1-5)

Physical Characteristics

A decidious Tree growing to 25m by 15m at a slow rate.

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

Habitats

Woodland Garden; Canopy;

Edible Uses

Edible Parts: Seed.

Seed - raw or cooked[161, 177]. Thin shelled but bitter and astringent[82, 183]. Even squirrels tend to pass it over[226]. The seed is about 3cm long[229]. The seed ripens in late autumn and, when stored in its shell in a cool place, will keep for at least 6 months[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.

Antirheumatic; Diuretic; Laxative.

The oil from the seeds has been used in the treatment of rheumatism[226]. The bark is diuretic and laxative[257].

Other Uses

Fuel; Oil; Rootstock; Wood.

An oil expressed from the seeds has been used as an illuminant in oil lamps[229]. Often used as a potted stock for grafting varieties of pecans (C. illinoensis)[227]. Wood - heavy, very hard, strong, elastic, tough, close grained[82, 227, 229]. It weighs 47lb per cubic foot[227]. Although the wood tends to be brittle, it has an amazing quality of shock-resistance and is used for hoops, tool handles etc, though it is considered to be inferior to other hickories[82, 227, 229]. A very good fuel, burning well and giving off a lot of heat[229].

Cultivation details

Prefers a deep moisture-retentive loam in a sunny sheltered position, requiring a good summer for best development[1, 63, 137, 200]. Slow growing[200]. This is the hardiest and best growing member of this genus in Britain[11], unfortunately the seed is bitter[82]. Hybridizes in the wild with C. illinoensis[43]. Hybridizes with other members of this genus[200]. Plants are strongly tap-rooted and should be planted in their permanent positions as soon as possible[1, 137]. Sowing in situ would be the best method so long as the seed could be protected from mice[1, 200]. Trees are late coming into leaf (usually late May to June) and lose their leaves early in the autumn (usually in October)[137]. During this time they cast a heavy shade. These factors combine to make the trees eminently suitable for a mixed woodland planting with shrubs and other trees beneath them[137]. Plants in this genus are notably resistant to honey fungus[200]. Most species in this genus have quite a wide range of distribution and, in order to find trees more suited to this country, seed from the most appropriate provenances should be sought[137]. Most trees growing in Britain at present tend to only produce good seed after hot summers[137]. Trees are self-fertile but larger crops of better quality seeds are produced if cross-pollination takes place[229].

Propagation

Seed - requires a period of cold stratification. It is best sown in a cold frame as soon as it is ripe[78]. Stored seed should be kept moist (but not wet) prior to sowing and should be sown in a cold frame as soon as possible[78]. Where possible, sow 1 or 2 seeds only in each deep pot and thin to the best seedling. If you need to transplant the seedlings, then do this as soon as they are large enough to handle, once more using deep pots to accommodate the tap root. Put the plants into their permanent positions as soon as possible, preferably in their first summer, and give them some protection from the cold for at least the first winter[78, K]. Seed can also be sown in situ so long as protection is given from mice etc and the seed is given some protection from cold[200] (a plastic bottle with the top and bottom removed and a wire mesh top fitted to keep the mice out is ideal)

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]).

[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.

[63] Howes. F. N. Nuts. Faber 1948
Rather old but still a masterpiece. Has sections on tropical and temperate plants with edible nuts plus a section on nut plants in Britain. Very readable.

[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.

[82] Sargent. C. S. Manual of the Trees of N. America. Dover Publications Inc. New York. 1965 ISBN 0-486-20278-X
Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader.

[137] ? The Plantsman. Vol. 9. 1986 - 1987. Royal Horticultural Society 1986
Excerpts from the periodical giving cultivation details and other notes on some of the useful plants including Carya spp and Crocus sativus.

[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237. U.S. Depf of Agriculture. 0
A comprehensive but very terse guide. Not for the casual reader.

[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.

[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.

[226] Lauriault. J. Identification Guide to the Trees of Canada Fitzhenry and Whiteside, Ontario. 1989 ISBN 0889025649
Very good on identification for non-experts, the book also has a lot of information on plant uses.

[227] Vines. R.A. Trees of North Texas University of Texas Press. 1982 ISBN 0292780206
A readable guide to the area, it contains descriptions of the plants and their habitats with quite a bit of information on plant uses.

[229] Elias. T. The Complete Trees of N. America. Field Guide and Natural History. Van Nostrand Reinhold Co. 1980 ISBN 0442238622
A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.

[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.

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.

Carya cordiformis

Duane Thu Mar 31 20:44:02 2005

it tastes bitter.... and it kind of tastes like peanuts but bitter peanuts....which makes it not good

Link: home dog its kind of good

Carya cordiformis

vern wayne borson Thu Mar 31 20:51:02 2005

tastes like chicken but bitter at that

Link: home cat mmmm

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