Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Astilbe Buch.-Ham. ex D.Don [108]

genus_ja: チダケサシ

genus_en:

# spp.: 29

pub_year:

accepted: Accepted

Family: Saxifragaceae

family_ja: ユキノシタ

Infra familial classification:

distribution_en: E.Asia (12), Appalachians

description_en: Genus of about 12 species of densely clump-forming, rhizomatous perennials from moist sites in mountain ravines, woodland, and streambanks in S.E. Asia and North America. Astilbes are grown for their striking, plume-like panicles, 18-35cm (7-14in) long, of tiny, red, pink, purple, or white flowers, borne mainly in summer. The dry flowerheads fade to decorative shades of brown in autumn, providing continued interest throughout the winter. They are attractive as cut flowers, but quickly fade. The handsome leaves, usually 23-75cm (9-30in) long, are 2- or 3-ternate, with each leaflet further divided into 3-5 toothed lobes. Grow in a damp border or a woodland garden, or use for waterside plantings. Numerous Astilbe hybrids have been raised. They are the result of often complex crosses between A. x arendsii, A. astilboides, A. chinensis, A. chinensis var. davidii, A. chinensis var. taquetii, A. japonica, A. simplicifolia, and A. thunbergii. A. x arendsii hybrids are 50-120cm (20-47in) tall, with ovate to lance-shaped, 2- or 3-ternate leaves, 20-75cm (8-28in) long, and panicles to 45cm (18in) long in the largest cultivars. A. chinensis and A. chinensis var. davidii hybrids are either low-growing, 15-25cm (6-10in) high, or tall, growing to 80-130cm (32-54in) high. They have elliptic-ovate, 3-ternate leaves, 15-50cm (6-20in) long, and slender panicles, 10-20cm (4-8in) long. A. japonica hybrids are 50-100cm (20-39in) tall, with ovate to ovate-lance-shaped, 2- or 3-ternate leaves, 15-60cm (6-24in) long, and erect, branched panicles, 10-20cm (4-8in) long. A. simplicifolia hybrids are usually 30-50cm (12-20in) tall, occasionally dwarf, with ovate to narrowly ovate, 2-ternate leaves, 13-55cm (5-22in) long, and small, arched panicles, 10-20cm (4-8in) long. A. thunbergii hybrids are 50-80cm (20-32in) tall, with ovate to lance-shaped, 2-ternate leaves, 20-55cm (8-22in) long, and open panicles, 20-30cm (8-12in) long, of white or pink flowers.

hardiness_en: Fully hardy.

cultivation_en:

propagation_en: Divide in winter or early spring when dormant; either replant the divisions immediately or pot them up to plant out in early summer when re-established.

pests_en: Powdery mildew and leaf spot may be a problem.

description_ja:

comment:

comment_ja: チダケサシ，アワモリショウマ，アカショウマ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2022-05-17 13:47 by hkokubun@mac.com

family: