Agathosma gonaquensis, commonly known as Gonaqua buchu, is a species of plant in the family Rutaceae.

Its habitat is restricted to a tiny area of the Eastern Cape, South Africa.

Unfortunately, massive urban sprawl has covered its natural habitat, and it now survives in only two tiny (and fragmented) populations.

It is used in local traditional medicine to make a tea to treat colds and hay fever.

With its striking white flowers and its tiny, dense, symmetrical foliage, it makes a very attractive plant for coastal gardens.