Asteraceae

Tropical whiteweed

Ageratum conyzoides L.

Family: Asteraceae
Genus: Ageratum

Pet and kid safety: not checked yet. Check pet-safe plants

Tropical whiteweed (Ageratum conyzoides) — FlowerPhoto: sdash, CC BY 4.0, from iNaturalist

Is yours looking unwell? Scan your plant — free

Common names

By language (14)

Arabic: كورنك| بركان
Chinese: 胜红蓟, 藿香蓟, 藿香蓟*(胜红蓟）, 藿香薊, 一枝香, 咸虾花, 土木香藿香蓟, 白毛苦
English: Tropical whiteweed, Billygoat-weed, Chickweed, Goatweed, Whiteweed
Ewe: Papa tahé
Indonesian: Babadotan, Babandotan
Javanese: Wedusan
mad: Beḍḍusân
Malagasy: Ahimaimbo, Ahimembo, Alonimpantsaka, Anajazavavy, Andranompatsaka, Bemaimbo, Fotsivony, Hanitrimpantsaka
Malay: Rumput tahi ayam, Ara batu, Naga buana, Selasih dandi, Senarung kambing, Tahi anjing, Tambak-tambak jantan
Malayalam: Billygoat-weed, Chick weed, Goatweed, Whiteweed
Portuguese: Catinga de bode, Erva-de-são-joão, Picão-roxo
Spanish: Caapetay, Cacalia mentrasto, Carelia conyzoides, Caápetay, Flor lila, Hierba de chucho, Hierba de perro, Hierba hemostatica
Swedish: Maile kula
Vietnamese: Cây hoa cứt lợn, Cây ngũ sắc, Cứt lợn

Synonyms

Ageratum album Hort.Berol. ex Hornem.
Ageratum album Steud.
Ageratum arsenei B.L.Rob.
Ageratum brachystephanum Regel
Ageratum ciliare L.
Ageratum ciliare Lour.
Ageratum coeruleum Desf.
Ageratum conyzoides f. album (Willd.) B.L.Rob.
Ageratum conyzoides f. conyzoides
Ageratum conyzoides f. obtusifolia (Lam.) Miq.
Ageratum conyzoides subsp. conyzoides
Ageratum conyzoides subsp. latifolium (Cav.) M.F.Johnson
Ageratum conyzoides var. conyzoides
Ageratum conyzoides var. hirtum (Lam.) DC.
Ageratum conyzoides var. inaequipaleaceum Hieron.
Ageratum conyzoides var. obtusifolium (Lam.) DC.
Ageratum conyzoides var. pilosum Blume
Ageratum cordifolium Roxb.
Ageratum hirsutum Lam.
Ageratum hirsutum Poiret
Ageratum hirsutum Poir.
Ageratum hirtum Lam.
Ageratum humile Larran.
Ageratum humile Salisb.
Ageratum humile Larrañaga
Ageratum iltisii R.M.King & H.Rob.
Ageratum latifolium Cav.
Ageratum latifolium var. galapageium B.L.Rob.
Ageratum latifolium var. latifolium
Ageratum microcarpum (Benth. ex Benth.) Hemsl.
Ageratum muticum Griseb.
Ageratum nanum hort. ex Sch.Bip.
Ageratum obtusifolium Lam.
Ageratum odoratum Bailly
Ageratum suffruticosum Regel
Alomia coelestina (Regel) B.L.Rob.
Alomia microcarpa f. torresii Standl.
Caelestina microcarpa Benth. ex Oerst.
Caelestina suffruticosa Sweet
Eupatorium conyzoides (L.) E.H.L.Krause

and 3 more.

Flowers

In flower: all year (from 1,113 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Forb/herb
Lifespan: Annual, Perennial
In the US and Canada: Hawaii: introduced, Lower 48 states: introduced, Pacific Basin: introduced, Puerto Rico: native, U.S. Virgin Islands: native

Photos

FlowerPhoto: sdash, CC BY 4.0, from iNaturalist
FlowerPhoto: Patrícia Mees, CC BY 4.0, from iNaturalist
FlowerPhoto: Gianni Del Bufalo bygdb, CC BY 4.0, from iNaturalist
FlowerPhoto: Greg III Espera, CC BY 4.0, from iNaturalist
Photo: Minghong, CC BY-SA 3.0, from Wikimedia Commons
Photo: Wynand Uys, CC BY 4.0, from iNaturalist
Photo: J.M.Garg, CC BY-SA 4.0, from Wikimedia Commons
Photo: J.M.Garg, CC BY-SA 4.0, from Wikimedia Commons
Photo: Robert Taylor, CC BY 4.0, from iNaturalist
Photo: J.M.Garg, CC BY-SA 4.0, from Wikimedia Commons
Photo: Addie, CC BY 4.0, from iNaturalist
Photo: J.M.Garg, CC BY-SA 4.0, from Wikimedia Commons

More in Ageratum

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.