The Conservatory Garden would not be complete without a selection of roses, one of the most popular flowers and America. The rose is a member of the Rosaceae family. Roses grow throughout the world, especially North America, Africa, and Europe. The rose blooms throughout the summer and into the mid fall. Many varieties of roses can be found in the Conservatory Garden, especially white, red, pink, and other vibrant colors. Roses grow on shrubs that can reach several feet tall, and are known for the prickly thorns that appear on their stems.