Blooming with summery buttercream flowers, this Summer Blooms Buttercream Flower Cake is almost too pretty to eat! Create a beautiful watercolor background by blending shades of green and blue icings together, then top your cake off with simple buttercream flowers. Best of all, no bag and tip needed! This entire cake is decorated with just a couple spatulas. A stunning centerpiece for a spring shower or birthday, this summery floral cake is one edible arrangement you'll be proud to show off.