Gomphrena haageana is a perennial herb with a tuberous root, erect, about , simple to much-branched; stem and branches subround, striped, moderately or thinly appressed-hairy. It has red strawberry-like flower heads.
The description of Gomphrena haageana emphasizes its perennial nature, the presence of a tuberous root, its upright and branching stem, the hairy texture of its leaves and stems, and the distinctive red color of its flowers.