Western Snakeroot

Ageratina occidentalis

Basic Information

Family: Asteraceae or Compositae

Genus: ageratina

Plant ID (slug): ageratina-occidentalis

Numeric ID: 21408

USDA Hardiness: 5-9

Ratings

Physical Characteristics

Ageratina occidentalis is a PERENNIAL growing to 0.7 m (2ft 4in). See above for USDA hardiness. It is hardy to UK zone 6. It is in flower from August to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The plant is self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Distribution

Western N. America.

Habitats

Woodland Garden Sunny Edge; Dappled Shade;

Edible Uses

None known

Medicinal Uses

Antirheumatic The plant is used externally in the treatment of rheumatism and swellings[254, 257].