The Lewis Ginter Botanical Garden offers something for everyone. We've been there in April and on the last day of September and it was equally compelling and interesting each time.
There's a conservatory with seasonal plantings and little houses to explore, and when I was there this time, an enchanting room full of tropical butterflies on loan from the Smithsonian. There's a large children's garden with an expansive treehouse and lots to learn in a fun way. There's a large gently terraced lawn that attracts both children and adults to somersault down it! Some other treats are a large pond with blue gill, bass, turtles, and frogs dwelling therein and footbridges crossing it; several fountains; a sensory garden with plants that smell, taste and feel good; and a small lily pad pond near the conservatory. We have never made it in time to try the teahouse but the setting for it is serene and beautiful, with outside seating in the shade.
Overall, the garden is an inspired blend of naturalistic and formal plantings, order and chaos, perennials and annuals, colour and form, foliage and flower. Obviously, a lot of thought has gone into the design and implementation of the gardens. Worth the trip, whether you have only an hour or three or four.