Kohautia amatymbica is an erect perennial (rarely annual) herb, up to 60 cm, with one to several unbranched stems from a woody base. Leaves opposite, narrowly linear to linear-lanceolate. Flowers in loose terminal inflorescences; Corolla lobes usually cream to white above, purple brown or dirty yellow underneath and on the corolla tube. The sweetly scented flowers are very noticable in the afternoon and early evening.
Grow in a well-drained soil in full sun. It is ideally suited to a rockery or grassland garden.
It is pollinated by moths.