Balboa Desert & Rose Garden
This is a historic garden that was created under the supervision of Kate Sessions in 1935 for the California Pacific International Exposition. Some of the largest cactus and succulent varieties can be found here. It is rumored that Dr. Seuss was inspired by the plants grown here and used these inspirations for the plants illustrated in his books.
Personal Experience: I love visiting this spot. There are so many quirky plants growing here including a hollowed out tree that is large enough to fit inside! The rose garden is filled with a large variety of fragrant, colorful roses and oh so beautiful. This is located on the east side of the Reuben H. Fleet Science Center.