👉 Crocuses are a family of annual flowering plants in the daisy family, Rosaceae. They are widely cultivated and used for ornamental purposes as perennials or cut flowers. These plants have distinctive white to yellowish-green flowers that bloom from midsummer until late fall. The stems and leaves are often white or pink, and they grow upright with long petioles. The thorns of crocuses can be sharp or dull, depending on the species and cultivar. C