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Helianthus maximilianii

Common name:	Maximillian Sunflower	Family:	Compositae
Author:	Schrad.	Botanical references:	43, 200, 235
Synonyms:
Known Hazards:	None known
Range:	Central N. America - Minnesota and Manitoba to Saskatchewan, Missouri, Nebraska and Texas.
Habitat:	Rich prairies[43], usually on drier soils[60]. Low moist areas, roadsides and prairies in Texas, often forming large colonies[274].
Edibility Rating (1-5):	3	Medicinal Rating (1-5):	0

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	H. dalyi[B,P] H. maximiliani[B,H,HORTIPLEX,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Maximilian Sunflower [FEIS,P,H], Michaelmas-daisy [B],
Systematics:	From a USDA Plants Database
	Order: Asterales. Renamed to Asteraceae -- Aster family

Physical Characteristics

Perennial growing to 2.4m. It is hardy to zone 4. It is in flower from September to October, and the seeds ripen from October to November. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees and flies. We rate it 3/5 for edibility and 0/5 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 cannot grow in the shade. It requires moist soil.

Habitats and Possible Locations

Cultivated Beds.

Edible Uses

Root.

Tubers - raw or cooked[22, 46, 61, 257]. Similar in flavour to Jerusalem artichokes, but lower yielding.
Seed - raw or cooked[183].
An edible oil is obtained from the seed[183].

Medicinal Uses

Disclaimer

None known

Other Uses

None known

Cultivation details

Succeeds in most soils in a sunny position[1]. Requires a rich soil[1]. Dislikes shade[1].
The young growth is extremely attractive to slugs, plants can be totally destroyed by them[K].
At least one named form has been developed. Called 'Prairie Gold', it is being investigated by the Land Institute in Salina, Kansas for its oil-seed potential in a non-tillage permaculture system[183]. The yield of edible tubers is not very high.
This species is closely related to H. giganteus[1].
Members of this genus are rarely if ever troubled by browsing deer or rabbits[233].
Plants have a running root system and can be invasive[1].

Propagation

Seed - sow spring in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Division in spring or autumn. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.
Basal cuttings in spring. Harvest the shoots when they are about 10 - 15cm long with plenty of underground stem. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer.

Cultivars

'Prairie Gold': This form is being investigated by the Land Institute in Salina, Kansas for its oil-seed potential in a non-tillage permaculture system[183].

Suppliers

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

Web References

[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.

References for Helianthus maximiliani (a possible synonym).

[H] Details of Scandanavian and European Common names in Henriette's names database
[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.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[FEIS] Data (Uses, Ecology, Fire Effects) from the USDA Forestry Service Fire Effects Information System.
[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

[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]).

[22] Sholto-Douglas. J. Alternative Foods.
Not very comprehensive, it seems more or less like a copy of earlier writings with little added.

[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.

[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.

[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.

[233] Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. 1990 ISBN 0 460 86048 8
A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.

[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.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
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