Discover Hendersonville, North Carolina’s Dahlia Garden at Bullington Gardens. Here, you’ll find 600 dahlia plants blooming from early August until the first frost, around mid-October. The flowers range in size from 2 to 12+ inches across, the plants from 1 to 8 feet tall. People love these dahlias because they’re beautiful and the gardens are free, but also because of the memories this ancient flower can evoke.