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Narrowed By:Zone: 4+ Characteristics: Attracts Butterflies+ Flower Color: Red+ Height: 6 - 12 in., 10 - 15 ft., Over 30 ft.
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Allium thunbergii
(Japanese onion)
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This is the last of the ornamental onions to flower, when mop-like heads of rose-purple flowers appear with orange anthers. The flowers are impervious to frost or snow. Superior cultivars include ‘Ozawa’, with larger purple flower heads than the species. A white-flowered form known as A. thunbergii ‘Alba’ is a splendid plant, with cup-shaped florets sporting white stamens, yellow anthers, and green centers.
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