千葉大学東葛キャンパス植物データベース

属名の詳細: Helenium L. [832]

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属英名: Helen’s flower

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科名: Asteraceae

科の和名: キク

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説明（英語）: 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.

耐寒性（英語）: Fully hardy to frost hardy.

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

病害虫（英語）: Leaf spot may be a problem.

説明:

備考（英語）: America

備考: マツバハルシャギク，ダンゴギク

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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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