Please donate to support our ‘Plants to Save the Planet’ Project. The Project is directed at enabling designers of ‘carbon farms’ and ‘food forests’: agroecosystems of perennial plants, to choose the most appropriate plants for their requirements and site conditions. We are working on a subset of plants in the PFAF database identified as having the most potential for inclusion in such designs. We are adding search terms and icons to those plants pages, and providing a range of search options aligned to categories of plants and crop yields, with Help facilities including videos. More >>>

Follow Us:

 

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    (0 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (3 of 5)
Care
Half Hardy Moist Soil Full sun
Ageratum conyzoides Goatweed, Tropical whiteweed


Ageratum conyzoides Goatweed, Tropical whiteweed
http://www.hear.org/starr/

 

Translate this page:

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 from May to October, in flower from July to September. 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. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist soil.

UK Hardiness Map US Hardiness Map

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].

Our new book Edible Shrubs is now available.

Edible Shrubs provides detailed information, attractively presented, on over 70 shrub species. They have been selected to provide a mix of different plant sizes and growing conditions. Most provide delicious and nutritious fruit, but many also have edible leaves, seeds, flowers, stems or roots, or they yield edible or useful oil.

Read More

Edible Shrubs Book

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].

Special Uses

Scented Plants

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].

Temperature Converter

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

Fahrenheit:

image

The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

Shop Now

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 NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Achillea ageratumMace, Sweet-nancyPerennial0.6 6-9  LMHNDM20 
Ageratum houstonianumAgeratum, Bluemink, Floss Flower, GardenAnnual0.3 0-0 MLMHNDM01 

 

Print Friendly and PDF

Expert comment

Author

L.

Botanical References

200

Links / References

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

Readers comment

QR Code

What's this?

This is a QR code (short for Quick Response) which gives fast-track access to our website pages. QR Codes are barcodes that can be read by mobile phone (smartphone) cameras. This QR Code is unique to this page. All plant pages have their own unique code. For more information about QR Codes click here.

1. Copy and print the QR code to a plant label, poster, book, website, magazines, newspaper etc and even t-shirts.

2. Smartphone users scan the QR Code which automatically takes them to the webpage the QR Code came from.

3. Smartphone users quickly have information on a plant directly for the pfaf.org website on their phone.

Add a comment

If you have important information about this plant that may help other users please add a comment or link below. Only comments or links that are felt to be directly relevant to a plant will be included. If you think a comment/link or information contained on this page is inaccurate or misleading we would welcome your feedback at admin@pfaf.org. If you have questions about a plant please use the Forum on this website as we do not have the resources to answer questions ourselves.

* Please note: the comments by website users are not necessarily those held by PFAF and may give misleading or inaccurate information.

To leave a comment please Register or login here All comments need to be approved so will not appear immediately.

Subject : Ageratum conyzoides  
All the information contained in these pages is Copyright (C) Plants For A Future, 1996-2012.
Plants For A Future is a charitable company limited by guarantee, registered in England and Wales. Charity No. 1057719, Company No. 3204567,
Web Design & Management
This work is licensed under a Creative Commons License. Some information cannot be used for commercial reasons or be modified (but some can). Please view the copyright link for more information.