Wavyleaf Aster takes its specific epithet from the Latin undulatum, describing the distinctly wavy margins of its clasping leaves, which are noticeable even before the plant blooms. It grows 1 to 5 feet tall on erect stems, spreading 1 to 2 feet wide through rhizomes and seed, and it is native to open deciduous woods, dry hammocks, sandhills, and roadside clearings across central and eastern North America including North Carolina.

Partial shade or dappled sunlight brings out the best in it, though full sun is tolerated. Dry rocky conditions that frustrate other perennials are not a problem here. The lavender flowers arrive later than most fall asters, making it genuinely valuable in a pollinator garden as a last source of pollen and nectar before the season closes. It also serves as a host plant for several caterpillar species, an ecological role worth preserving. If plants grow too tall through summer, a midsummer trim keeps them compact without affecting the fall bloom. Zones 3 to 8.