Ageratum houstonianum, commonly called floss flower, is a frost-tender annual of the aster family that provides continuous bloom for beds, gardens or. A. houstonianum is an annual herb native to Mexico and Central America. It was brought to Europe shortly after its discovery, where its use as. There are many cultivars available of this fast-growing annual. They are best used as bedding, edging, or container plants. Panicles of blue, pink, purple.

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Ageratum houstonianum (Houston’s whiteweed): Go Botany

Don’t need the entire report? Distribution Table Top of page The distribution in this summary table is based on all sgeratum information available. Also widely naturalised in the tropical regions of the world, including south-eastern USA i. Sunlight also keeps the flowers and leaves drier too thus preventing molds from damaging your plants further.

However, you need to look out for a few pests.

Ageratum houstonianum (Floss Flower)

ageeatum Johnson, ; PIER, As for animals, it is highly toxic to the liver if eaten. The plant is native to Central America in Guatemala and Belize, and adjacent parts of Mexico, but has become an invasive weed in other areas. Wester L, Juvik JO, It prefers a cool climate but can easily adapt to a temperate zone. Essential oils have antimicrobial and antifungicidal properties Pandey et al, ; Menut et al.

A tendency to develop Powdery Mildew seems to be its only downside see below about how to overcome this. Excellent choice for bedsbordersedgingsmass plantingrock gardens or groundcovers. Roadsides, waste areas, areas of habitation.


Optimal germination reported is between 6. Excessive humidity can cause oedema, as reported by the Cornell Garden-Based Learning resources and plant nursery websites.

Ageratum houstonianum (Floss Flower)

It is a Native plant of Mexico. The leaves of A. This species is widely naturalised in the coastal districts of eastern Australia i. Seed may also be sown directly in the garden after last frost date, however flowering season will be shorter late summer to frost.

If you look at the photos below and click to enlarge them, you can see what happens as the tiny buds unfurl. However, it can be advisable to thin your plants to allow more air flow around the plants.

Smithsonian Contributions to Botany, Can you please help us? The tiny, light, seeds are often dispersed by wind and water. This page was last edited on 31 Decemberat Agerattum and Hilburn, Return from Ageratum Houstonianum to Annual Plants. The ray flowers are threadlike and fluff-haired, leading to the common name.

Koi list A. Reported as of one of the species of most concern, as a transformer and an invasive in other countries. Massachusetts not applicable S-rank: Only plants will be removed from the collection.

To reuse an image, please click it to see who you will need to contact. The inclusion of recently introduced plants in the Hawaiian ethnopharmacopoeia. Intentional and unintentional introduction. Agerate bleu Local Common Names Cuba: Warm temperate climate with dry winter Warm average temp.


If you do want to fertilize it further agsratum the track, a slow release form is best.

But it’s perfectly safe for Butterflies and they certainly houstonnianum it. You need to remove the unhealthy plant to ensure that the infection does not spread. An old favorite with its fluffy round clusters, Ageratum houstonianum Floss Flower is one of the few annuals to tolerate light shade.

Description Top of page The following description is from Johnson, Leaves are applied to wounds to stop bleeding Bodner and Gereau, Fine Gardening – Issue Preview: Impact on Biodiversity The dense ground cover and colonies of A. Double Check Are you sure you want to delete your notes for this recipe?

Search our database of Housstonianum. They can be differentiated by the lack of a pappus in Alomia Houstoniabum, Sign Up Log In Follow. Flowering and fruiting occur all year long Flora of China Editorial Committee, Chemical composition of the essential oils of Ageratum houstonianum Mill. It is also reported as invasive in Kenya, Malawi and Rwanda. National Plant Germplasm System. Most pictures you see of Floss Flowers show them crammed into bedding gardens.

Royal Botanic Gardens, Kew.