Havana's tropical climate makes it a gardening paradise. Many homes in neighborhoods like Vedado and Miramar are fronted with flowers and shrubs that provide year-round visual interest. Blooming beauties include the shaving brush tree, bloodflower, peacock flower, cat's tail, and the bush clock vine. The jasmine called the mariposa flower, or the butterfly flower, is a popular choice as the national flower. Take a private tour in Gardens of Havana,...