The Transvaal gardenia is a small deciduous to evergreen tree, reaching a mature height of up to 8m depending on habitat and growing conditions. It favours open woodland, bushveld and thicket. Its range stretches from tropical Africa down through Namibia and Botswana, into the north-eastern reaches of South Africa and KwaZulu-Natal.

This multi-stemmed tree carries a dense, rounded crown, sometimes with arching branches low enough to brush the ground. The bark is pale grey and smooth. The branchlets take on a distinctive knobbly texture from persistent leaf-like stipules at the base of each leaf stalk. The glossy, spoon-shaped leaves cluster in groups of three at the tips of short, stout branchlets — a neat, textural habit that gives the whole crown a tidy, layered look.

From July to October, the tree bears masses of large, white, trumpet-shaped flowers. Each bloom opens into six to nine lobes and releases a sweet scent that intensifies after dark. The flowers open at night specifically to attract moths, their most likely pollinators. A garden with a mature specimen in bloom can carry that fragrance for some distance on a still evening. The blooms age gracefully from white to a soft creamy-yellow. They then give way to ribbed, egg-shaped fruit that persist on the branches well after flowering, adding a second season of interest.

The tree has a working relationship with the wild as well as the ornamental. Giraffe and kudu browse the leaves. The tough fruit don’t split or drop on their own. Elephants, antelope and primates break them open and disperse the seeds. Traditional healers use preparations from the roots and fruit to treat intestinal parasites. Local folklore also credits the tree with protective qualities, and communities have long planted it near homesteads to guard against lightning and evil spirits.

Its slow growth rate, modest stature and non-invasive root system make it a natural choice for smaller gardens. G. volkensii also performs beautifully as a container specimen for the patio. The tree takes well to bonsai training, rewarding patience with a tree that looks far older than its years.