Dietes bicolor, the African iris, butterfly flag, fortnight lily, or peacock flower,[1] is a clump-forming rhizomatous perennial plant with long sword-like evergreen pale green leaves, growing from multiple fans at the base of the clump.

It can form large clumps if left undisturbed for years.

It is commonly cultivated in its native South Africa, where it is often used in public gardens, beautification of commercial premises and along roadsides.

Ripe seeds (dark brown in colour) are dispersed when the capsule dries and splits.

Plants prefer dappled-shade to full sun where they will flower in profusion, though they will grow in shaded areas (with an accompanying loss of flower production).