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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Robinson, ; Johnson, ; Missouri Botanical Garden, Watch for aphids and whiteflies. Its colors range from blue, purple, lavender to pink, red, white and bicolor, providing a nice contrast with the rest of the bedding plants.

Ageratum houstonianum

Noteworthy Characteristics Fast grower. Chemicals that induce the premature metamorphosis and sterilization of some insect species were isolated from A. Blue billygoat weed Ageratum houstonianum is often confused with another very similar species, billygoat weed Ageratum conyzoides.

An updated flora of Egypt. Seed may be started indoors in late winter and transplanted outdoors after threat of frost has passed.


Don’t let it dry out! Fruit Gardening Vegetable Gardening. The species propagates by housonianum and vegetatively by the prostrate portion of the stem Barua et al.

The bases of the flower-heads are relatively small mm across A.

They can grow from 12 to 39 inches tall. Ageratum houstonianumcommonly called floss flower, is a frost-tender annual of the aster family that provides continuous bloom for beds, gardens or containers from late spring to frost. Zebu cattle have been reported to suffer from intoxication ageratuk grazing on A.

Ageratum houstonianum is toxic to grazing animals, causing liver lesions. By using this site, you agree to the Terms of Use and Privacy Policy. Essential oils have antimicrobial and antifungicidal properties Pandey et al, ; Menut et al.

Also widely naturalised in the tropical regions of the world, including south-eastern USA i. Not sure which Ageratum – Floss Flowers to pick?

Floss Flower: How To Care For Ageratum Houstonianum –

Excellent choice for bedsbordersedgingsmass plantingrock gardens or groundcovers. Flora of China Editorial Committee, Checklist of the plants of the Guiana Shield Venezuela: Missouri Botanical Garden, Leaves are applied to wounds to stop bleeding Bodner and Gereau, Pacific Island Ecosystems at Risk. So do the Houtsonianum. Asteraceae leaf extracts against Anopheles stephensiAedes aegypti and Culex quinquefasciatus Diptera: The flowering period is from May to November in the northern hemisphere.


The gorgeous fluffy flowers of Ageratum open from tiny buttons all over the seed head, just like the Bottlebrush, Calliandra and other similar flowers. Leaves of Ageratum conyzoides a and A.

The Plant Guide

Ageratum houstonianum is prone to becoming a rampant environmental weed when grown outside of its natural range. Habitat Top of page A. Gardeners dictionary, 8th ed. The ray flowers are threadlike and fluff-haired, leading to the common name.

Plants for a Future. Get garden design ideas Find your perfect garden. September”Biological activity of precocene analogues on Locusta migratoria “, Cellular and Goustonianum Life Sciences Both surfaces of the leaves and the leaf stalks have a scattered covering of hairs i.