2nd Year Maturity. Whiteout Candytuft seeds promise a year round touch of southern Europe and the Mediterranean in your home and garden. Iberis is easy to grow from seed and a delicate favorite for fresh cut arrangements, baskets, and bouquets. Whiteout Candytuft seeds grow hardy branching 6-12 inch tall iberis plants with elegant clusters of leafy, papery blooms in vivid alpine white. Whiteout iberis seeds grow cool-hardy evergreens that thrive perennially in a variety of temperate and moderate winters across North America.