Heartleaf Arnica

Arnica cordifolia

Physical Characteristics

Arnica cordifolia is a PERENNIAL growing to 0.5 m (1ft 8in). See above for USDA hardiness. It is hardy to UK zone 2. It is in flower in July. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid and neutral soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Distribution

Western N. America - Alaska to New Mexico.

Habitats

Woodland Garden Sunny Edge;

Edible Uses

None known

Medicinal Uses

Antiecchymotic Antiphlogistic Nervine Salve Sternutatory Vulnerary The whole plant is antiecchymotic, antiphlogistic, nervine, sternutatory and vulnerary[172]. When applied intravenously or orally it causes a rise in body temperature[212]. All parts of the plant may be used[212], but the flowers are used in preference to the root[207, 212]. They have a discutient property and a tincture is used as an external application to swellings, sprains, bruises and wounds[207, 257]. A salve applied to cuts helps to keep down infections[212].

Known Hazards

The whole plant is toxic and should only be used for external applications to unbroken skin[172].