The flower heads are borne in dense corymbs. Common Name: Ageratum. Taller plants usually benefit from some support. Ageratums are easily grown from seed. Ageratum houstonianum. Ageratum houstonianum is a ANNUAL growing to 0.3 m (1ft) by 0.3 m (1ft in) at a medium rate. Some taller varieties (e.g., the triploid ‘Blue Horizon’) are more erect and grow to as much as 30” tall. It … Native Introduced Native and Introduced The cultivated varieties include tetraploids and hybrids (Johnson, … Some common names for the half hardy annual Ageratum include Flossflower, Garden Ageratum, and Tropical Whiteweed. Tolerates light shade, and prefers some light afternoon shade in hot summer climates. Sparganophorus obtusifolius L ag. Asteraceae, the aster, daisy, or composite family … Powdery mildew is an occasional problem, particularly in hot and humid climates where soils are kept on the dry side and air circulation is poor. Preferring cool soils and exposure in full sun, high varieties reach stature heights up to 60 centimetres. It has hairy, rough, oval shaped leaves with serrated edges and produces distinctive, fluffy flowerheads that are made up of fine filaments and bloom all summer long. 4 synonyms for ageratum: Conoclinium coelestinum, Eupatorium coelestinum, mistflower, mist-flower. It is an herb that is 0.5–1 m. high, with ovate leaves 2–6 cm long, and flowers are white to mauve. Asia: Japan and Korea. It is hardy to zone (UK) 9. Plant in part shade where summers are hot. Seeds are tiny and difficult to work with, particularly for direct outdoor plantings. Ageratum houstonianum var. Root rot may occur in poorly drained soils. Other Common Names: ageratum Data Source and Documentation: About our new maps. - Ageratum, Whiteweed, Flossflower, Maile Honohono, Maile Hohono, Maile Kula - Hawaiian Plants and Tropical Flowers. Common Name Group Filter Dicot: Monocot: Fern: Gymnosperm: Moss: Liverwort: Hornwort: Fungi: Algae: Incertae sedis: Records 1 - 9 of 9 Page of 1 Family! Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (ed. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Species flowers are medium blue, however many cultivars are available in commerce in various shades of blue, pink, red, white and bicolor. Latin name. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. It has hairy, rough, oval shaped leaves with serrated edges and produces distinctive, fluffy flowerheads that are made up of fine filaments and bloom all summer long. Common name: Floss flower. [1] The plant is native to Central America and adjacent parts of Mexico, but has become an invasive weed in other areas. The plants may have downy white, pink, deep violet or pale blue flowers. What are synonyms for ageratum? Scientific Name and Common Name; Kingdom: Plantae – Plants Subkingdom: Tracheobionta – Vascular plants Superdivision: Spermatophyta – Seed plants Division: Magnoliophyta – Flowering plants Class Still it is beneficial to know the common name of all garden plants. Some varieties have more heat tolerance especially the vegetatively propagated types. Ageratum nanum Hort. Synonyms for ageratum in Free Thesaurus. This plant is an excellent bedding plant. Ageratum houstonianum or the Floss Flower is a pretty, annual bedding plant that grows in clumps or mounds. AGERATUM : Herbal Properties and Actions : MAIN ACTIONS: OTHER ACTIONS: STANDARD DOSAGE: relieves pain: reduces fever : Whole Plant: reduces spasms: cleanses blood: Infusion: 1 cup twice daily: relieves inflammation: stops … Leptochloa chinensis (L.) Nees. The ray flowers are threadlike and fluff-haired, leading to the common name. 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. Click below on a thumbnail map or name for species profiles. ex Sch.Bip. Powdery mildew is most common during wet, humid weather. The ordinary Ageratum is a perennial, herbaceous plant or a dwarf, or shrub. Also effective in rock gardens. This species probably originated in Central and South America, but its exact native enrage is obscure. Common Name: Ageratum. First autumn frost will kill most if not all plants, at which point they may be removed from the garden. It prefers moist … 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. Duration: Annual, Perennial. Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Ageratum odoratum Bailly. Family. Ageratum meridanum V.M.Badillo. Identifying characteristics: Floss like flower heads. It is in leaf from May to October, in flower from July to September. 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. Poaceae. The flowering period is from May to November in the northern hemisphere.[3]. … It is hardy to zone (UK) 8. [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. It is an herb that is 0.5–1 m. high, with ovate leaves 2–6 cm … Annual. It looks like the annual ageratum and in … This species is accepted, and its native range is Mexico to Central America. Species flowers are medium blue, however many cultivar… Today, it is widely used as an ornamental plant for summer borders and balcony boxes, high varieties also as cut flowers. Ageratum humile Salisb. Fungal issues. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Ageratum houstonianum Mill. … Several dwarf varieties are commonly used as edging plants. It was also naturalized in large parts of the tropics and in the southern United States. There are many types of Ageratum, but Ageratum houstonianum is the most commonly used in both home and display gardens of all kinds. Ageratum spp. Hawaii Native Status: Introduced. Hi, Ageratum is an unsung little plant that can add much when planted at the front of the border. Key features: Attractive to wildlife Flowers Ageratum houstonianum is a popular herbaceous plant, bearing large trusses of fluffy flowers on strong stems. Plant Type . Ageratum conyzoides is a ANNUAL growing to 1 m (3ft 3in). Ageratum latifolium Cav. This chemical triggers the next molting cycle to prematurely develop adult structures, and can render most insects sterile if ingested in large enough quantities. There are many types of Ageratum, but Ageratum houstonianum is the most commonly used in both home and display gardens of all kinds. 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). Asteraceae (Queensland, New South Wales, the ACT, Victoria, Tasmania, Western Australia and the Northern Territory) Compositae (South Australia) Common Names The flowering period is from May to November in the northern hemisphere. Scientific Name Genus: Ageratum. However, it is not a legal authority for statutory or regulatory purposes. 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). It is now very … They typically flower from June to late September. https://slflora.blogspot.com/2015/06/blue-billy-goat-weed-agaratum.html Scientific Name. Ageratum is a usually erect, and often much-branched, annual plant growing 30 - 100cm tall. Ageratum houstonianum Mill. Some taller varieties (e.g., the triploid ‘Blue … The Ageratum houstonianum or Floss Flower as it is more commonly known, belongs to the Asteraceae family - the same very special family to which the Daisies, Asters, Gerberas, Chrysanthemums and so many others all belong. f., P. malabarica Retz., P. sinensis J. F. Gmel. Image credit to Australian National Botanic Gardens. 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. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. The fruits are small brown one-seeded achenesfruits. Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly rounded clusters atop compact, mounded plants generally ranging from 4 to 18 tall. [2] [3] Ageratum has evolved an ingenious method of protecting itself from insects; it produces a precocene compound which interferes with the normal function of the corpus allatum, the organ responsible for secreting juvenile … You can also know the Ageratum Scientific Classification which will help you gain the botanical information about the plant. It is in flower from June to October, and the seeds ripen from August to October. The ray flowers are threadlike, leading to the common name. If you want to know what a plant is called in Hindi, Greek, Portuguese or Polish, you are at the right place. Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Most common ageratums, "Hawaii" for example, are a short 6-8 inches when full grown. Noa, M., Sanchez, L.M., Durand, R., "Ageratum houstonianum toxicosis in Zebu cattle", Veterinary and human toxicology, 2004, vol.46, no4, pp.193-195. Nomenclature and Classification > Taxon Record Name > Scientific Name. Foliage colour: Green. Their habitat is pastures, moist forest clearings and bushes up to altitudes of 1000 meters. Common name of Ageratum is the name which changes with change in the regions. typicum B.L.Rob., 1923 Ageratum mexicanum Sims Ageratum mexicanum Sw. Ageratum mexicanum Sweet Ageratum mexicanum f. caeruleum Voss, 1896 Ageratum mexicanum f. mexicanum Ageratum mexicanum f. wendlandii Voss, 1896 Ageratum mexicanum var. Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly rounded clusters atop compact, mounded plants generally ranging from 4” to 18” tall. Volume 5: Herbaceous ornamental and useful plants . This article was most recently revised and updated by Melissa Petruzzello, Assistant Editor. It's easy to grow, undemanding, copes with whatever nature throws at it & looks right at home in a cottage garden. The Plants Database includes the following 5 species of Ageratum . Common name(s): Flossflower, Bluemink, Blueweed and others Synonyme(s): N/A Family: Asteraceae Origin: Belize, Guatemala, Mexico More infos: cultivars flowering in pink and white are also available. Ageratum is a Linnaean name derived from the Greek a (not), and geras (old age), referring to the long-lasting nature of the flowers.The majority of species are native to the New World. Culture and use notes: Many cultivars some from cuttings most from seed. Botanical name: Ageratum houstonianum 'Blue Mink' Common name: Purple mistflower ; Family: Asteraceae ; Plant Type: Annual ; Flower colour: Blue. Common Name: Blue Mink: Habitat: ** Associated Ecological Communities: ** Growth Habit: Herb: Duration: Perennial: Category: Vascular: USDA Symbol: ** Plant Notes: Floss Flower is an introduced annual in the Aster family (Asteraceae). Image credit to Australian National Botanic Gardens. Common Name: Ageratum. Instead, the public now uses the genus name so frequently that it doubles, in essence, as a second common name. Scientific Name: Ageratum spp. Ageratum conyzoides (L.) L. is an accepted name The Plant List: Other vernacular names: CHINESE: Sheng hong ji, Huo xiang ji. Locations within which Ageratum houstonianum is naturalisedinclude Australia, south-eastern USA, southern Europe, Africa, China, Japan, New Zealand and some Pacific islands. Common names. Suitable pH: acid, … But the common name is seldom used in most circles. They are about 18 inches in height with blue flowers. Spektrum Akademischer Verlag, Berlin Heidelberg 2008, Acamovic, T., Stewart, C.S., Pennycott, T.W.,"Poisonous Plants and Related Toxins", 2004. They typically flower from June to late September. Common Names: Ageratum, Whiteweed, Flossflower, Maile Honohono, Maile Hohono, Maile Kula. Put 2 to 3 drops of this juice in both the nostrils once only. While every effort has been made to provide the most reliable and up-to-date information available, ultimate legal requirements with respect to species are contained in provisions … Ageratum houstonianum is a ANNUAL growing to 0.3 m (1ft) by 0.3 m (1ft in) at a medium rate. Some common names for the half hardy annual Ageratum include Flossflower, Garden Ageratum, and Tropical Whiteweed. by ; Keystone Foundation (0 ratings) 0. It grows to approximately 1 m in height. Synonyms . Etymology Ageratum is derived from Greek "a geras," meaning non-aging, referring to the plant's longevity.Conizoides is derived from "kontz," the Greek name of Inula helenium, which it resembles (Kissmann and Groth, 1993). Ageratum hirsutum Poir. It has become an invasive weed in the United States, Australia, Europe, Africa, China, Japan, New Zealand, and the Philippines. In climates where powdery mildew is a problem, avoid overhead watering and site in areas with good air circulation. Ageratum is prized for its blue flowers and is one of best blue-flowered annuals available. Common Name(s): Ageratum; Blue Boneset; Blue Mistflower; Blue Mist Flower; Hardy Ageratum; Mistflower; Wild Ageratum; Previously known as: Eupatorium coelestinum; Phonetic Spelling koh-no-KLY-nee-um koh-el-ES-tee-num Description. Family Name: Asteraceae. conyzoides. Click below on a thumbnail map or name for species profiles. The narrow lanceolate bracts are pointed, denticulate only at the top and glandular hairy. The flowers are purple, blue, pinkish or white, less than 6 mm across, with around 30 to 50 flowers and arranged in close terminal flower-heads. 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. Flossflower is an annual plant. Watch for aphids and whiteflies. [9], Ageratum houstonianum is prone to becoming a rampant environmental weed when grown outside of its natural range. Plants may wilt and die. The species is cultivated once a year, having numerous varieties whose crowns may be dark blue, purple, pink and white. … Hence, scientific name of Ageratum is used worldwide. Ageratum obtusifolium Lam. Taller varieties are appropriate for mid-borders or cutting gardens. ex Benth.) Common Names. Compositae, H. Beentje, C. Jeffrey & D.J.N. I hope you enjoy my board & please feel free to pin how much you like. Prefers rich soils with good drainage and consistent moisture throughout the growing season. Native to Mexico, Central America and the Caribbean. Ageratum can be grown in full sun or part shade, but keep in mind that if you grow your plant in the shade, you might miss out on a few extra blooms and the plant habit may become a little looser. (45)Botany Bulak-manok is an erect, slender, branched perennial, hairy and aromatic herb, 15 to 60 centimeters in height. The epithet conyzoides refers to the species' resemblance to the genus Conyza (Encyclopedia of Life, 2016). Annual reproducing from … Close-up of the flowers Photograph by: Shepherd, R.C.H. Family Name: Asteraceae. Some taller varieties (e.g., the triploid Blue Horizon) are more erect and grow to as much as 30 tall. Antonyms for ageratum. It is a Native plant of Mexico. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Common name. Plant Characteristics. This plant is called Ageratum in Hindi, Ageratum in Greek, Ageratum in Portuguese and … Ageratum hirtum Lam. Ageratum wants well-drained garden soil with a soil pH of 6.5 to 7.5. 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. Flowering Shrubs. Thanks to modern breeding it now has a more varied colour selection to choose from. Asteraceae (Compositae) Origin. Thanks to modern breeding it now has a more varied colour selection to choose from. Common name from its goat like odour. Scientific name. Native: Introduced: Both: Absent/Unreported: Native, No County Data: ... Scientific Name and Common Name; Kingdom: Plantae – Plants Subkingdom: Tracheobionta – … … There is also a medium height snowcapped variety, white top on blue flowers. Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly rounded clusters atop compact, mounded plants generally ranging from 4” to 18” tall. The common name is widely used everywhere. Without full sun, plants may also have more issues with foliar diseases, such as powdery mildew. Flossflower is the chief common name for Ageratum houstonianum. ): Rothmaler - excursion flora of Germany. [6], Ageratum houstonianum is toxic to grazing animals, causing liver lesions. The narrow lanceolate bracts are pointed, denticulate only at the top and glandular hairy. Ageratum conyzoides L. Synonyms. David Beaulieu Flossflower is the chief common name for Ageratum houstonianum. Their size and color makes ageratums good candidates … Description of Flossflower . Zone: Annual. Notes on Taxonomy and Nomenclature Top of page. Description of Flossflower . ageratum, billy goat crofton, billy goat weed, billygoat weed, blue billy goat weed, blue billygoat weed, blue top, bluemink, bluetop, dark bluetop, floss flower, flossflower, garden ageratum, goat weed, goatweed, invading ageratum, Mexican ageratum, Todd's curse, tropic ageratum Ageratum suffruticosum Regel [10], The cultivars 'Blue Danube'[12] and 'Blue Horizon'[13] have gained the Royal Horticultural Society's Award of Garden Merit.[14]. Apply this juice on cut areas once only. GF - Ageratum - common names Flossflower, Billygoat Weed Collection by Sue Sutcliffe. Seed may be started indoors in late winter and transplanted outdoors after threat of frost has passed. Life Cycle. Descriptions; Uses; Images; Distribution; Synonyms; Common Names; Other Data; Bibliography; Sources; Descriptions. It’s ideal for using as edging and as part of summer container displays. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Turn the soil and add aged compost and lightly fertilizer with an all-purpose fertilizer. Hemsl. Use ageratum as an edging for flower beds or as an accent in containers or … Ageratum mexicanumSims. Flora of Tamil Nadu, VOL. Ageratum conyzoides is an erect, branching, soft, slightly aromatic, annual herb with shallow, fibrous roots. It is in flower from June to October, and the seeds ripen from August to October. [2], The ordinary Ageratum is a perennial, herbaceous plant or a dwarf, or shrub. Ageratum houstonianumMill. Ageratum performs best in the late spring and early summer and in the early fall. Learn More in these related Britannica articles: Asteraceae. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. Ageratum humile Larrañaga. The ray flowers are threadlike and fluff-haired, leading to the common name. Seed may also be sown directly in the garden after last frost date, however flowering season will be shorter (late summer to frost). Ageratum pinetorum (L.O.Williams) R.M.King & H.Rob. [7][8] It contains pyrrolizidine alkaloids. Flowering plant Photograph by: Shepherd, R.C.H. 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. Flower Color: Lavender to purplish blue, White. 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. Identification Notes. Plants tend to wilt quickly if soils are allowed to dry out. Blue billygoat weed, ageratum, bluemink, flossflower, goatweed. 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. The cutting propagated cultivars remain in flower longer than seed cultivars. Easily grown in average, moist, well-drained soils in full sun. The plant is sometimes harvested from the wild for local medicinal use. II, 1987; Matthew 1983, Giri & Majumdar 1983 Information Listing > References … … On this page Created with Sketch. Botanical name: Ageratum houstonianum; Common name: Flossflower; Where to Plant Floss Flower. It cannot grow in the shade. Common name(s): Flossflower, Bluemink, Blueweed and others Synonyme(s): N/A Family: Asteraceae Origin: Belize, Guatemala, Mexico More infos: cultivars flowering in pink and white are also available. Family. Height: Up to 32 inches feet (0.8 m) tall or more. The blues are most popular and common, but colors also include violet, pink and white. This species is accepted, and its native range is Mexico to Central America. Taller varieties make good cut flowers.Genus name presumably comes from the Greek a meaning not and geras meaning old age because the flowers hold their color for a long time. Wiedenfeld H, Andrade-Cetto A., "Pyrrolizidine alkaloids from Ageratum houstonianum Mill. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Image credit to Australian National Botanic Gardens. Family: ASTERACEAE: Species: Ageratum conyzoides L.: Common Name: TROPICAL WHITEWEED: Plant Notes: The leaf blades have yellow punctate glands abaxially, and are apparently rarely ever eglandular, while the peduncles and phyllaries are without stipitate glands (Johnson 1971). New for 2020. Bulak-manok is a local common name shared by (1) Adenostemma lavenia, boton, dungweed, and (2) Ageratum conyzoides, billy goat weed. (D-4) [OR-2-2-1348] Wound (cuts, scratches): Grind the leaves of Ageratum conyzoides and extract the juice. Ageratum houstonianum Mill. South and Southeast Asia: Bangladesh, Cambodia, India, Indonesia, Lao PDR, Malaysia, Myanmar, Pakistan, Philippines, Sri Lanka, Thailand, and Vietnam. Epilepsy: Squeeze the leaves of Ageratum conyzoides with a pinch of common salt and extract the juice. Identification Notes. Ageratum can grow up to 24 inches (60 cm) in height. Rounded, hairy, opposite leaves with prominent veins. … Scientific Name Genus: Ageratum. Ageratum conyzoides L. subsp. Taller cultivars are used … A. conyzoides is the species designated by Linnaeus as the type for the genus (Johnson, 1971). Ageratum performs best in the late spring and early summer and in the early fall. Synonyms. It is hardy to zone (UK) 8. Ageratum definition is - any of a genus (Ageratum) of annual tropical American composite herbs often cultivated for their small showy heads of usually blue or white flowers; also : a related blue-flowered perennial (Eupatorium coelestinum). Their height and color makes them very suitable for edging as they often form … ", 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. The common garden ageratum (A. houstonianum), also known as floss flower and blue mink, is frequently cultivated as an ornamental annual. Common Name of Ageratum in other languages is an interesting information one should know. Very ornamental, it is often grown in gardens Common Names: Catinga de Bode, Mexican ageratum, Erva de Sao Joao, Aru batu, Bandotan, Berokan, Rumput tahi ayam, Rompesaraguelo, Wedusan Part Used: Entire plant. Latin Name Common Name Habit Height Hardiness Growth Soil Shade Moisture Edible Medicinal Other; Achillea ageratum: Mace, Sweet-nancy: Perennial: 0.6: 6-9 LMH: N: DM: 2: 0 : Ageratum houstonianum: Ageratum, Bluemink, Floss Flower, Garden: Annual: 0.3: 0-0 M: LMH: N: DM: 0: 1 Flowering plant Photograph by: Shepherd, R.C.H. No serious insect or disease problems. The Ageratum houstonianum or Floss Flower as it is more commonly known, belongs to the Asteraceae family - the same very special family to which the Daisies, Asters, Gerberas, Chrysanthemums and so many others all belong. The flower heads are borne in dense corymbs. According to Flora of Tropical East Africa. For gardeners who do not wish to use seed, live plants are available from many nurseries in cell packs/six packs and flats. Family: Asteraceae. The stems and leaves are covered with fine white hairs; the leaves are egg-shaped with broad end at base (ovate) up to 7.5 cm long. Ageratum houstonianum. Common names The best way to manage fungal infections is to use drip irrigation. Ageratum houstonianum. Annuals, Asteraceae - Aster Family, Foul-smelling Hawaiian Plants, Herbs and Forbs, Introduced Plants, Perennials, Poisonous Hawaiian Plants, Purple and Blue Flowers, Purple and Blue Hawaiian Flowers, White Flowers, White Hawaiian Flowers. Categories: All Shrubs; New; Tried & True Classics; Web Exclusives It is a Native plant of Mexico. Red sprangletop. A member of the Aster family, a good look at the flowers will reveal the resemblance to, for example, Joe-pye weed, another … Plant floss flower in full sun. Shorter varieties are excellent as bedding plants, edgers (along paths, walkways and border fronts) and container plants (hanging baskets, window boxes, urns or other containers). Origin. Mar 11, 2016 - Hi, Ageratum is an unsung little plant that can add much when planted at the front of the border. It's easy to grow, undemanding, copes with whatever nature throws at it & looks right at home in a cottage garden. Tall ageratum are also available in seed catalogues. 45 Pins • 859 followers. Family: ASTERACEAE: Species: Ageratum conyzoides L.: Common Name: TROPICAL WHITEWEED: Plant Notes: The leaf blades have yellow punctate glands abaxially, and are apparently rarely ever eglandular, while the peduncles and phyllaries are without stipitate glands (Johnson 1971). Plants may not bloom to frost in some hot summer climates, but usually do so in cooler ones. Geographical distribution. The plants may have downy white, pink, deep violet or pale blue flowers. Commonly called mistflower, this late summer to fall-blooming herbaceous perennial is native to the Eastern United States. But the common name is seldom used in most circles. It is used to treat unspecified medicinal disorders. A. houstonianum was first collected in 1731, at Veracruz, Mexico, and is now a popular garden plant. flowers, leaves, whole plant Photograph by: Shepherd, R.C.H. These naturalized wildflowers are native to the tropical Americas. Common Name(s): Ageratum; Blue Boneset; Blue Mistflower; Blue Mist Flower; Hardy Ageratum; Mistflower; Wild Ageratum However, it is not a legal authority for statutory or regulatory purposes. Leaves are typically rounded, cordate-at-the-base, hairy, slightly quilted and soft green. Growth Habit: Herb/Forb. Ageratum is prized for its blue flowers and is one of best blue-flowered annuals available. Spent flowers will fall to the ground as they fade to be replaced by new bloom throughout the growing season. Ageratum ranges from Southeastern North America to Central America, but the centre of origin is in Central America and the Caribbean. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable pH: acid, neutral and basic (alkaline) soils.