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Ageratum conyzoides - L.

Common Name Goatweed, Tropical whiteweed
Family Asteraceae or Compositae
USDA hardiness 8-11
Known Hazards None known
Habitats A common weed of cultivated ground, having spread from its native range to all areas of the Tropics within 20° of the Equator, to an altitude of 2,500 metres[200].
Range S. America.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Half Hardy Moist Soil Full sun
Ageratum conyzoides Goatweed, Tropical whiteweed


Ageratum conyzoides Goatweed, Tropical whiteweed
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Summary


Physical Characteristics

 icon of manicon of flower
Ageratum conyzoides is a ANNUAL growing to 1 m (3ft 3in).
It is hardy to zone (UK) 9. It is in leaf 10-May It is in flower from Jul to September. The species is hermaphrodite (has both male and female organs) and are pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist soil.

Synonyms

Habitats

 Cultivated Beds;

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.

Antiinflammatory;  Lithontripic;  Skin;  Styptic;  Vulnerary.

The plant contains between 0.7 - 2.0% essential oil, plus alkaloids and saponins[283]. The whole plant is antiinflammatory and antiallergic[283]. The juice of the fresh plant, or an extract of the dried plant, is used in the treatment of allergic rhinitis and sinusitis[283]. The juice of the fresh plant is also useful in treating post-partum uterine haemorrhage[283]. The juice of the root is antilithic[240, 243]. A paste of the root, mixed with the bark of Schinus wallichii, is applied to set dislocated bones[272]. The leaves are styptic[240]. They are dried and applied as a powder to cuts, sores and the ruptures caused by leprosy[272], The powder absorbs the moisture of the disease and forms a layer that is removed after 1 - 2 days[272]. An effective cure for most cuts and sores, though it does not effect a complete cure for leprosy[272]. The leaves are also used externally in the treatment of ague[240, 243]. The juice of the plant is used to treat cuts, wounds and bruises[272]. A paste of the leaves is used as a poultice to remove thorns from the skin[272]. A paste made of the leaves mixed with equal amounts of Bidens pilosa, Drymaria cordata, Galinsoga parviflora and the rhizome of Zingiber officinale is used to treat snakebites[272]. The juice of the flowerheads is used externally to treat scabies, whilst a paste of them is used to treat rheumatism[272]. A tea made from the flowerheads mixed with Ocimum tenuifolium is used to treat coughs and colds[272].

Other Uses

Essential;  Hair.

The leaves and the flowers yield 0.2% essential oil with a powerful nauseating odour[240]. The oil contains 5% eugenol, which has a pleasant odour[240]. The oil from plants growing in Africa has an agreeable odour, consisting almost entirely of eugenol[240]. A decoction of the fresh plant is used as a hair wash, leaving the hair soft, fragrant and dandruff free[283].

Cultivation details

Succeeds in full sun in a sheltered position in any reasonably fertile moisture-retentive soil that does not dry out in the summer[200]. Plant vigour and flowering periods are much reduced on dry soils[200]. This species is not frost hardy, though it can be grown as a summer annual in Britain[200]. The fresh plant is malodorous[200].

Propagation

Seed - sow late winter or early spring in a warm greenhouse and only just cover the seed. Prick out the seedlings when large enough to handle and plant out after the last expected frosts[200]. Seed can also be sown in situ in the spring and, for earlier blooms, it is possible to sow it in late summer or early autumn, though it will need to be overwintered in a warm greenhouse[200].

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

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 :

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Achillea ageratumMace, Sweet-nancy20
Ageratum houstonianumAgeratum, Bluemink, Floss Flower, Garden01

 

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Author

L.

Botanical References

200

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Subject : Ageratum conyzoides  
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