Helianthemum canadense Frostweed, Longbranch frostweed PFAF Plant Database

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Summary

Physical Characteristics

Helianthemum canadense is a PERENNIAL growing to 0.4 m (1ft 4in).
See above for USDA hardiness. It is hardy to UK zone 7. It is in flower from May to July. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects, cleistogamy.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Plant Habitats

Woodland Garden Sunny Edge;

Edible Uses

None known

References More on Edible Uses

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].

References More on Medicinal Uses

Other Uses

None known

Special Uses

References More on Other Uses

Cultivation details

Requires a light well-drained soil in a sunny open position[200]. Tolerates a pH range from 5.5 to 8[200].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:

Celsius Fahrenheit:

Plant 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].

Other Names

If available other names are mentioned here

Native Range

NORTHERN AMERICA: Canada (Québec (southwest), Nova Scotia, Ontario), United States (Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Illinois, Iowa, Minnesota, Missouri, Wisconsin, Delaware, Georgia, Kentucky, Maryland, North Carolina, South Carolina, Tennessee, Virginia)

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it's worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

IUCN Red List

Related Plants

Latin Name	Common Name	Habit	Height	Hardiness	Growth	Soil	Shade	Moisture	Edible	Medicinal	Other
Helianthemum nummularium	Common Rockrose, Sun Rose, Rock Rose	Shrub	0.5	5-8	F	LMH	SN	M	0	1	3

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

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Expert comment

Author

(L.)Michx.

Botanical References

43200235

Links / References

For a list of references used on this page please go here

Helianthemum canadense - (L.)Michx.