HEIRLOOM. Dimorphotheca sinuata. Although originally from Africa, this drought-tolerant annual is naturalized in parts of the United States. Plants grow in mounds and produce 2-inch wide orange, salmon, and white flowers. They make excellent cut flowers but will close at night in the garden or bouquet. African Daisy Flake makes a nice groundcover when planted in large areas. The flake type of seed comes from the ray flowers, what most people would call the petals, that are situated on the outside of the flower head.