100 Days of Summer - Flower Bulbs. Get ready to experience the beauty of summer with a delightful bag filled with 50 stunning summer-flowering bulbs. Guaranteed to bring joy to your garden all summer, this bag makes for a fantastic gift for yourself or a fellow gardening enthusiast. These flowers are perfect for attracting bees, butterflies, and other beneficial insects to your garden. For most types, planting summer-flowering bulbs should be done in April or May. Keep in mind that summer-flowering bulbs are generally not winter-hardy, so it's best to wait until the risk of frost has passed before planting them.