Category: Rarium | Sub-Category: Perennials for Sun
Scientific Name (Genus/Species): Isatis glauca
Family: (Brassicaceae)
(B/P) to 3-½’. Woad. Asia Minor to Iran. A lovely, short-lived perennial with dense panicles of large, golden yellow, four-petalled flowers atop glabrous, blue-green, basal foliage. Attractive blackish bronze, dangling, persistent, papery fruits to follow. This plant was once the ancient world’s only source of blue dye. Late spring/early summer. Self-sows. Well-drained soil. Sun. 3 & T1