Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Helenium L. [832]

genus_ja:

genus_en: Helen’s 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, biennials, and perennials found in damp, swampy meadows or at woodland margins in North and Central America. They are mostly clump-forming plants with sturdy, branching stems and ovate to inversely lance-shaped, mid-green leaves, 15-20cm (6-8in) long. The daisy-like flowerheads have prominent yellow or brown disc-florets, and ray-florets in yellow, bronze, orange, or red. Heleniums flower over a long period and are suitable for a sunny, mixed or herbaceous border. The flowerheads are useful for cutting and are attractive to bees. All parts may cause severe discomfort if ingested; contact with the foliage may aggravate skin allergies.

hardiness_en: Fully hardy to frost hardy.

cultivation_en:

propagation_en: Sow seed of species, or root basal cuttings of cultivars, in containers in a cold frame in spring. Divide in autumn or spring.

pests_en: Leaf spot may be a problem.

description_ja:

comment: America

comment_ja: マツバハルシャギク，ダンゴギク

type_species:

Phylogenetic definition:

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

family: