What is the most hardy annual flower?
Alyssum, bachelor’s buttons, calendula, cleome, delphinium, foxgloves, larkspur, lisianthus, pansies, and rudbeckia—these gorgeous flowers are all easy-to-grow, hardy annuals that thrive in the colder temperatures in spring and fall. Annuals that last throughout the year and flower over and over again: Violas, Pansies, Calendula (aka pot marigolds), Zinnias.