DescriptionTrue Indigo plant, Indigofera tinctoria. Fermentation of foliage produces a permanent blue dye reputed for its fastness and clarity, and also employed for hair colouring—a popular, yet old-fashioned, landscaping plant with a compact habit and attractive foliage. The true indigo plant is native to Asia and prefers fertile, well-drained soils in a part-shaded position. Drought-tender but frost-resistant. A deciduous perennial, growing to 4m.
