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Ageratina occidentalis - (Hook.)R.M.King.&H.Rob.

Common Name Western Snakeroot
Family Asteraceae
USDA hardiness 5-9
Known Hazards None known
Habitats Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Redwood Forest and Douglas-Fir Forest at elevations of 1900 - 3300 metres in California[276].
Range Western N. America.
Edibility Rating    (0 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (1 of 5)
Care (info)
Fully Hardy Moist Soil Semi-shade Full sun
Ageratina occidentalis Western Snakeroot


J.S. Peterson @ USDA-NRCS PLANTS Database http://plants.usda.gov/
Ageratina occidentalis Western Snakeroot
J.S. Peterson @ USDA-NRCS PLANTS Database http://plants.usda.gov/

 

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Summary


Physical Characteristics

 icon of manicon of flower
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.

UK Hardiness Map US Hardiness Map

Synonyms

Eupatorium occidentalis.

Plant Habitats

Woodland Garden Sunny Edge; Dappled Shade;

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.
Antirheumatic

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

References   More on Medicinal Uses

Other Uses

None known

Special Uses

References   More on Other Uses

Cultivation details

Succeeds in an ordinary well-drained but moisture retentive garden soil in sun or part shade[200].

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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

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Plant Propagation

Seed - sow spring in a cold frame, only just covering the seed. When large enough to handle, prick the seedlings out into individual pots and plant them out in the summer. Division in spring.

Other Names

If available other names are mentioned here

Native Range

NORTHERN AMERICA: United States (Idaho, Montana, Oregon, Washington, California, Nevada, Utah)

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 NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Ageratina altissimaWhite Snakeroot, RichweedPerennial2.0 5-9  LMHSNM020
Ageratina aromatica Perennial1.5 4-8  LMHSNM11 
Ageratina herbaceaFragrant SnakerootPerennial2.0 5-9  LMHSNM01 
Ageratina ligustrina Shrub5.0 9-11  LMHNM00 
Ageratina rugosum  0.0 -  LMHSNM00 

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

(Hook.)R.M.King.&H.Rob.

Botanical References

200

Links / References

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

Readers comment

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Subject : Ageratina occidentalis  
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