Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Ageratum L. [1365]

genus_ja:

genus_en: Floss flower

# spp.:

pub_year:

accepted: Accepted

Family: Asteraceae

family_ja: キク

Infra familial classification:

distribution_en:

description_en: Genus of about 40 species of annuals, perennials, and shrubs from diverse habitats in tropical and warm-temperate North and South America, some of which have become naturalized in many tropical and subtropical countries. They may be erect, spreading, or mound-forming in habit, and have oval to lance-shaped, mid-green leaves. In summer and early autumn, panicles of 30-50 small flowerheads form soft, rounded, brush-like clusters, varying in colour from bright blue or grey-blue to pink or white; they are attractive to butterflies. Ageratums are usually grown as annuals; use A. houstonianum and its cultivars for bedding or as edging in borders. They may also be grown in containers.

hardiness_en: Half hardy.

cultivation_en:

propagation_en: Sow seed at 16-18°C (61-64°F) in early spring, or sow in autumn and overwinter at 10°C (50°F).

pests_en: Prone to root rot.

description_ja:

comment: temp. to trop. America

comment_ja: カッコウアザミ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2020-09-04 03:56

family: