RHS Herbaceous Perennial
A rhizomatous herbaceous perennial, 10-25cm high, with narrow leaves 2-4mm wide, and flowers in spring or early summer. The erect standards may be white, veined with deep blue-violet, to uniform deepest purple, pale blue or pale yellow; the somewhat horizontal falls may be blackish-violet, through pale purple densely overlaid with black-purple veins, to golden yellow, and the beards are velvety black-purple; it is dormant in late summer
Position
Full sun
Soil Types
Chalk, Loam, Sand
Max Height
0.1-0.5 metres
Max Spread
0.1-0.5 metres