Candytuft White (Iberis sempervirens) | Free-flowering and spreading! Mounds of Snow on Low-Growing, Evergreen Plants! Each 6-inch plant is awash in white blooms all spring! Long-lived and easy to grow! Few evergreen perennials boast the flower power of this vigorous little plant! Every spring, these low-growing 6-inch-tall plants vanish beneath hundreds of dainty white blooms that tumble over walls or creep along the ground in the sunny garden. ...