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Helianthemum canadense - (L.)Michx.                
                 
Common Name Frostweed
Family Cistaceae
Synonyms
Known Hazards None known
Habitats Open woods, clearings and barrens in dry sandy soils[43]
Range Eastern N. America - Maine to Ontario and Wisconsin, south to North Carolina and Mississippi.
Edibility Rating  
Medicinal Rating  
Care
Fully Hardy Well drained soil Moist Soil Full sun

Summary       

Physical Characteristics       
 icon of manicon of flower
Helianthemum canadense is a PERENNIAL growing to 0.4 m (1ft 4in).
It is hardy to zone 7. It is in flower from May to July. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects, cleistogamy.

USDA hardiness zone : Coming soon


Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil.

Helianthemum canadense Frostweed


http://flickr.com/photos/7457894%40N04
Helianthemum canadense Frostweed
http://flickr.com/photos/7457894%40N04
   
Habitats       
Woodland Garden Sunny Edge;
Edible Uses                                         
None known
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.

Alterative;  Antiscrophulatic;  Astringent;  Cancer;  Tonic.

The dried leaves are alterative, antiscrofulatic, astringent and tonic[4, 21, 46, 207]. A tea made from the leaves is used in the treatment of kidney ailments and sore throats[222, 257]. A strong leaf tea has been used in the treatment of scrofula[222]. It is applied externally to skin diseases and eye infections[222]. It is said that an oil helpful in the treatment of cancer has been obtained from the plant[4]. Some caution is advised since an overdose can cause nausea and vomiting[4].
Other Uses
None known
Cultivation details                                         
Requires a light well-drained soil in a sunny open position[200]. Tolerates a pH range from 5.5 to 8[200].
                                                                                 
Propagation                                         
Seed - sow spring in a greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 6 - 8cm with a heel, late summer in a sandy soil in a frame[200].
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Expert comment                                         
 
      
Author                                         
(L.)Michx.
                                                                                 
Botanical References                                         
43200235
                                                                                 
Links / References                                         

[4]Grieve. A Modern Herbal.
Not so modern (1930's?) but lots of information, mainly temperate plants.
[21]Lust. J. The Herb Book.
Lots of information tightly crammed into a fairly small book.
[43]Fernald. M. L. Gray's Manual of Botany.
A bit dated but good and concise flora of the eastern part of N. America.
[46]Uphof. J. C. Th. Dictionary of Economic Plants.
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.
[200]Huxley. A. The New RHS Dictionary of Gardening. 1992.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
[207]Coffey. T. The History and Folklore of North American Wild Flowers.
A nice read, lots of information on plant uses.
[222]Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America.
A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.
[257]Moerman. D. Native American Ethnobotany
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 comment                                         
 
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Subject : Helianthemum canadense  
             

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