This Proven Winners® Ornamental Onion blooms mid- to late-summer, much later than many of the larger spring-blooming Alliums. Flowering in rosy purple, the plant's globe-like flowers appear and stay fresh for long stretches, almost never being nibbled by deer or rabbits. Keep the spent blooms in place on the plant for autumn interest by way of dried seed heads, and you'll have an attractive plant to gaze upon for a good part of the year.