Showy bloomers are a type of flower that are known for their bright and vibrant colors. Dahlias and peonies are two examples of showy bloomers, both of which have seven letters in their name. Dahlias are a type of flower that come in a variety of colors, including yellow, pink, red, and white. Peonies are a type of flower that are often used in bouquets and arrangements due to their large size and beautiful petals.