千葉大学東葛キャンパス植物データベース

属名の詳細: Rudbeckia L. [131]

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属英名: Coneflower

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科名: Asteraceae

科の和名: キク

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説明（英語）: Genus of about 20 species of annuals, biennials, and perennials (some of which may be grown as annuals), with short rhizomes, from moist meadows and light woodland in North America. They have branched or unbranched stems, and most have alternate, simple to pinnatifid, occasionally pinnate, prominently veined leaves, toothed towards the tips. Usually solitary, daisy-like flowerheads, often with reflexed yellow ray-florets and conical centres consisting of black, brown, or green disc-florets, are borne on long stems over a long period from summer to autumn. Most are good for cut flowers. Grow in a border or naturalize in a meadow or woodland garden. Most cultivars of R. hirta are grown as annuals, and are good for bedding or for infilling in borders.

耐寒性（英語）: Fully hardy to half hardy.

栽培（英語）:

繁殖（英語）: Sow seed of perennials in containers in a cold frame in early spring, or divide in autumn or spring. Sow seed of annuals and biennials at 16-18°C (61-64°F) in spring.

病害虫（英語）: Slugs may damage young growth. R. laciniata ‘Golden Glow’ is susceptible to aphids.

説明:

備考（英語）: N.America

備考: オオハンゴンソウ，グロリオサデージー(?)

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更新情報: 作成: 2007-12-06 12:51; 更新: 2020-09-04 03:56

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