These easy-to-grow blooms will add power to your posy. 1. Calla lilies About: large, waxy flowers Growing conditions: free-draining soil, semi-shade to sun, grown from bulbs in spring – if you live in a cold area, grow callas in pots. Flowers: don’t touch the flower itself as this can bruise it, cut stems at a … Continue reading 5 easy-to-grow summer flowers for homemade bouquets