Grows well well north of its native range.  Documented in very southern counties with an outlier in Martin County -- that outlier is also unique in that it was collected near a cypress dome. Closely related to corn, this species has been crossed with maize to produce a corn that is resistant to Helminthosporium turcicum, the fungus that causes northern leaf blight  (Wikipedia). Listed as Threatened in Florida. Informal borders.

Both male and female plants required for pollination and seed set. Specimen tree.  Screen.

The author treats this as a friendly weed. Pull them if where there is something more desirable. Back of a wildflower garden in a casual setting. Grown en-masse, this plant can be used as a temporary groundcover.

The cells of the stamen hairs of some Tradescantia are colored blue, but when exposed to sources of ionizing radiation such as gamma rays, the cells mutate and change color to pink; they are one of the few tissues known to serve as an effective bioassay for ambient radiation levels. Border plantings.

Multi-stemmed. A single stem is a curiosity. A large multi-stemmed plant is a long-blooming wonder. Despite the common name, this species has sweet-smelling flowers. The range of this species extends from central Texas east and north into southern New England.  It is represented in Florida by a few isolated occurrences in northwest Florida. Specimen shrub

Trellis or fence

In a managed garden, gamagrass can be trimmed back at the end of winter. Hedge, foundation planting, individual large grass clump, background screen for a flower garden. Rain garden or bioswale.

The name Walter's viburnum honors Thomas Walter (1740-89), English-born planter of South Carolina, who described this species in his Flora Caroliniana. Specimen plant, hedge or screen plant. Can be allowed to form a thicket, sheared, or kept pruned into a tree.  Fast growing.