The plant grows to 0.3–1 m high, with ovate to triangular leaves 2–7 cm long, and blue flowerheads (sometimes white, pink, or purple). Their habitat is pastures, moist forest clearings and bushes up to altitudes of 1000 meters. It … Image credit to Australian National Botanic Gardens. Ageratum houstonianum, commonly known as flossflower, bluemink, blueweed, pussy foot or Mexican paintbrush, is a cool-season annual plant often grown as bedding in gardens. Ageratum nanum Hort. It grows to approximately 1 m in height. Description of Flossflower . Native to Mexico, Central America and the Caribbean. This species is accepted, and its native range is Mexico to Central America. They typically flower from June to late September. Life Cycle. Ageratum conyzoides (billygoat-weed, chick weed, goatweed, whiteweed, mentrasto) is native to Tropical America, especially Brazil, and is an invasive weed in many other regions. - Ageratum, Whiteweed, Flossflower, Maile Honohono, Maile Hohono, Maile Kula - Hawaiian Plants and Tropical Flowers. Image credit to Australian National Botanic Gardens. Close-up of the flowers Photograph by: Shepherd, R.C.H. Also effective in rock gardens. Ageratum houstonianum. Ageratum is prized for its blue flowers and is one of best blue-flowered annuals available. Commonly called mistflower, this late summer to fall-blooming herbaceous perennial is native to the Eastern United States. [4][5], Ageratum has evolved a unique method of protecting itself from insects: it produces a methoprene-like compound which interferes with the normal function of the corpus allatum, the organ responsible for secreting juvenile hormone during insect growth and development. Ageratum houstonianum, commonly 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. Plants tend to wilt quickly if soils are allowed to dry out. The ray flowers are threadlike, leading to the common name. ", Global Compendium of Weeds, Ageratum houstonianum (Asteraceae), Project Gutenberg Literary Archive Foundation, https://en.wikipedia.org/w/index.php?title=Ageratum_houstonianum&oldid=994045226, Creative Commons Attribution-ShareAlike License, This page was last edited on 13 December 2020, at 20:55. It is a Native plant of Mexico. Asteraceae (Compositae) Origin. ): Rothmaler - excursion flora of Germany. Ageratum can grow up to 24 inches (60 cm) in height. Learn More in these related Britannica articles: Asteraceae. You can also know the Ageratum Scientific Classification which will help you gain the botanical information about the plant. … Scientific name. Space taller varieties 12” apart and shorter varieties 6” apart. They typically flower from June to late September. ex Benth.) The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Notes on Taxonomy and Nomenclature Top of page. flowers, leaves, whole plant Photograph by: Shepherd, R.C.H. This article was most recently revised and updated by Melissa Petruzzello, Assistant Editor. However, it is not a legal authority for statutory or regulatory purposes. Fungal diseases such as powdery mildew, gray mold, or Pythium may occur in and cause damage to your ageratum plants.Signs include white growth on leaves and flowers, and damping off of stems at the soil level. Leptochloa chinensis (L.) Nees. Plant in part shade where summers are hot. Duration: Annual, Perennial. Common name of Ageratum is the name which changes with change in the regions. Apply this juice on cut areas once only. Categories: All Shrubs; New; Tried & True Classics; Web Exclusives Ageratum humile Salisb. Wiedenfeld H, Andrade-Cetto A., "Pyrrolizidine alkaloids from Ageratum houstonianum Mill. Their height and color makes them very suitable for edging as they often form … The narrow lanceolate bracts are pointed, denticulate only at the top and glandular hairy. ageratum, billy goat weed, billy-goat weed, billygoat weed, billygoat-weed, blue top, blue top weed, bluetop, chick weed, floss flower, flossflower, goat weed, goatweed, invading ageratum, tropic ageratum, tropical whiteweed, white weed, whiteweed, winter weed. Asteraceae (Queensland, New South Wales, the ACT, Victoria, Tasmania, Western Australia and the Northern Territory) Compositae (South Australia) Common Names Origin. The cultivated varieties include tetraploids and hybrids (Johnson, … David Beaulieu Flossflower is the chief common name for Ageratum houstonianum. Fungal issues. It is hardy to zone (UK) 9. 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