It is hardy to zone 7. It is in flower from July to August, and the seeds ripen from August to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees, flies, Lepidoptera (Moths & Butterflies), beetles.
The plant is self-fertile.
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; Dappled Shade; Shady Edge; Bog Garden;
Root - cooked[95, 105, 161, 257]. The root is likely to be rich in inulin, a starch that cannot be digested by humans. This starch thus passes straight through the digestive system and, in some people, ferments to produce flatulence[K].
Young stems - peeled and eaten raw[46, 61, 95, 105]. Soft and sweet[161], they are considered to be a luxury food[257].
Young shoots - raw or cooked as greens[257]. Harvested in spring[257].
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.
The seed of all species of thistles yields a good oil by expression[4]. No details of potential yields etc are given[K].
Cultivation details
An easily grown plant, succeeding in any ordinary garden soil in a sunny position[200].
A monocarpic species, it grows for a number of years without flowering but then dies after flowering[60].
Propagation
Seed - sow early spring or autumn in situ. Germination usually takes place within 2 - 8 weeks at 20°c.
Links
References
[K] Ken Fern Notes from observations, tasting etc at Plants For A Future and on field trips.
[4] Grieve.A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9 Not so modern (1930's?) but lots of information, mainly temperate plants.
[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.
[60] Hitchcock. C. L.Vascular Plants of the Pacific Northwest. University of Washington Press 1955 A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is 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.
[95] Saunders. C. F.Edible and Useful Wild Plants of the United States and Canada. Dover Publications 1976 ISBN 0-486-23310-3 Useful wild plants of America. A pocket guide.
[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.
[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.
[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.
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.
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