千葉大学東葛キャンパス植物データベース

属名の詳細: Achillea L. [101]

属和名:

属英名: Yarrow

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正名？: 正名

科名: Asteraceae

科の和名: キク

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説明（英語）: Genus of about 85 species of mainly deciduous perennials from temperate regions of the N. hemisphere. Some, from mountainous regions, are low growing and mat-forming; other species, from grassland or dry wasteground, are taller and herbaceous. The grey or green, often aromatic leaves are mostly 1- to 3-pinnate or pinnatifid, and fern-like, although some are entire, they are elliptic to lance-shaped, toothed, and 15-30cm (6-12in) long in most species, 5-12cm (2-5in) long in smaller-growing achilleas. The basal leaves are usually larger than the stem leaves. Most achilleas produce daisy-like flowerheads, 3-15mm (1/8-1/2in) across, in corymbs, 7-12cm (3-5in) across, In summer and autumn; the disc- and ray-florets are usually both white or both yellow. Newer cultivars and hybrids, including the Galaxy Hybrids (A. millefolium x A. ’Taygetea’), offer a wide colour range, and produce flowerheads in compound corymbs, 15-20cm (6-8in) across. Grow achilleas in a wildflower or rock garden; the taller ones are excellent for a mixed or herbaceous border, and for cutting and drying. Contact with foliage may aggravate skin allergies.

耐寒性（英語）: Fully hardy.

栽培（英語）:

繁殖（英語）: Sow seed in situ or divide in spring. A. clypeolata is short-lived, so divide annually to maintain stocks. Divide A. ’Moonshine’ regularly to maintain vigour.

病害虫（英語）: Aphids may be a problem; powdery mildew is common, especially on A. ptarmica cultivars.

説明:

備考（英語）: N.temp.

備考: ノコギリソウ，ヤロー(yarrow)

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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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