Polygala is a large genus of flowering plants belonging to the family Polygalaceae. They are commonly known as milkworts or snakeroots. The genus is distributed widely throughout much of the world in temperate zones and the tropics. The genus name Polygala comes from the ancient Greek “much milk”, as the plant was thought to increase milk yields in cattle. Polygala includes annual and perennial plants, shrubs, vines, and trees. The roots often have a scent reminiscent of wintergreen. The leaf blades are generally undivided and smooth-edged and are alternately arranged in most species. The inflorescence is a raceme or spike-like array of several flowers; the occasional species bears solitary flowers.

Polygala gazensis, synonymously known as Polygala esterae, Polygala teretifolia, Polygala teretifolia var. gazensis, is a South African endemic perennial flowering shrublet found in the Eastern Cape and KwaZulu-Natal provinces. Flowering occurs from spring through to summer. It is a charming, small shrub. The stems are covered with numerous pink to purple flowers.