Zanthoxylum americanum

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Zanthoxylum americanum
Light:Full Sun Part Shade
Moisture:Mesic
Hardiness:3
Soil pH:5.6-8.4
Cross Pollinated
Height:13'
Width:13'
Blooms:Late Spring-Early Summer
Native to:
Edible Rating:PFAF Edibility RatingPFAF Edibility Rating
Medicinal Rating:PFAF Medicinal RatingPFAF Medicinal Rating
Tea:Yes
Poisonous

Zanthoxylum americanum (common name: prickly ash)

Propagation: Seed - best sown in a greenhouse as soon as it is ripe in the autumn. Stored seed may requires up to 3 months cold stratification, though scarification may also help[1]. Sow stored seed in a cold frame as early in the year as possible. Germination should take place in late spring, though it might take another 12 months. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in a cold frame for their first winter. Plant them out in early summer.

Cuttings of half-ripe wood, July/August in a frame.

Root cuttings, 3cm long, planted horizontally in pots in a greenhouse. Good percentage[2].

Suckers, removed in late winter and planted into their permanent positions[1].

Cultivation: Prefers a good deep well-drained moisture retentive soil in full sun or semi-shade[3][4][5].

A relatively fast-growing plant in the wild, it often forms thickets by means of root suckers[6].

All parts of the plant are fragrant. The bruised foliage has a delicious resinous orange-like perfume[7].

Dioecious. Male and female plants must be grown if seed is required.

Flowers are formed on the old wood[8].

Range: Eastern N. America - Quebec to Florida, west to Minnesota and Oklahoma.

Habitat: Found on upland rocky hillsides and on moist low-lying sites, in open woods, on bluffs or in thickets[6].

Edibility: Seed - cooked. It is used as a condiment. A pepper substitute[9]. The fruit is rather small, about 4 - 5m in diameter[6], but is produced in dense clusters which makes harvesting easy[K]. Each fruit contains a single seed[6].

Medicinal: Prickly ash is a warming, stimulating herb that is beneficial for the circulation. It was highly regarded by the native North American Indians who used it especially to alleviate rheumatism and toothache[10]. All parts of the plant, but especially the bark and roots, contain the aromatic bitter oil xanthoxylin[6]. This has a number of applications in medicine, especially in the treatment of arthritic and rheumatic conditions, digestive problems and leg ulcers[6][10]. The fruit has a similar medicinal action to the bark[11].

The bark and roots are irritant, odontalgic and antirheumatic[12]. Along with the fruit they are diaphoretic, stimulant and a useful tonic in debilitated conditions of the stomach and digestive organs[11]. They produce arterial excitement and are of use in the treatment of fevers, ague, poor circulation etc[11].

The fruits are considered more active than the bark, they are also antispasmodic, carminative, diuretic and antirheumatic[11][12][13].

The pulverized root and bark are used to ease the pain of toothache[12][13]. One report says that it is very efficacious, but the sensation of the acrid bark is fully as unpleasant as the toothache[12]. Chewing the bark induces copious salivation[13]. Rubbing the fruit against the skin, especially on the lips or in the mouth, produces a numbing effect[K].

A tea or tincture of the bark has been used in the treatment of rheumatism, dyspepsia, dysentery, heart and kidney troubles etc[13].

A tea made from the inner bark has been used to treat itchy skin[12][14].

Usage: The fruits have been used by young men as a perfume[14].

Wood - soft. It weighs 35lb per cubic foot[15]. Of little use[6].

Soil: Can grow in light, medium, and heavy soils.

Drainage: Prefers well drained soil.

Seed Ripens: Early Fall-Mid Fall

Flower Type: Dioecious

Also Known As: Z. fraxineum.

Links

References

  1. 1.0 1.1 Dirr, Michael and Charles Heuser. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press, 1987.
  2. Sheat, Wilfrid. Propagation of Trees, Shrubs and Conifers. St Martin, 1948.
  3. Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  4. Bean, William. Trees and Shrubs Hardy in Great Britain. Murray, 1981.
  5. Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  6. 6.0 6.1 6.2 6.3 6.4 6.5 6.6 Elias, Thomas. The Complete Trees of North America. Van Nostrand Reinhold, 1980.
  7. Genders, Roy. Scented Flora of the World. Robert Hale, 1994.
  8. Larkcom, Joy. Oriental Vegetables. John Murray, 1991.
  9. Coon, Nelson. The Dictionary of Useful Plants. Rodale Press, 1975.
  10. 10.0 10.1 Chevallier, Andrew. The Encyclopedia of Medicinal Plants. Dorling Kindersley, 1996.
  11. 11.0 11.1 11.2 11.3 Grieve, Margaret. A Modern Herbal. Penguin, 1984.
  12. 12.0 12.1 12.2 12.3 12.4 Weiner, Michael. Earth Medicine, Earth Food. Ballantine Books, 1980.
  13. 13.0 13.1 13.2 13.3 Foster, Steven and Billy Tatum. Medicinal Plants of Eastern and Central North America. Houghton Mifflin, 1990.
  14. 14.0 14.1 Moerman, Daniel. Native American Ethnobotany. Timber Press, 1998.
  15. Britton, Nathaniel and Addison Brown. An Illustrated Flora of the Northern United States and Canada. Dover Publications, 1970.