Plectranthus is the largest South African genus in the mint family (Lamiaceae), with 44 species natural to South Africa, most of which occur on the eastern side of the country. Some species are narrowly endemic occurring only in a very limited area, while others are widespread and very variable and consequently difficult to distinguish. Among the South African members of the genus we have some of the showiest garden plants providing a mass display of colour in late summer and autumn. Colour selections range between pink, purple and white and many shades in-between. Plectranthus are noted for their aromatic leaves when crushed or even brushed against, and the variety of aromas is as diverse as the genus itself.

Plectranthus oertendahlii is an attractive shade-loving groundcover and incredibly remarkable potplant with silver variegated leaves that are attractive throughout the year. Plectranthus oertendahlii has somewhat succulent leaves and stems that root as they spread along the soil. It develops into small, low clumps of about 200 mm high. The upper surface of the round, broadly serrated leaves is clearly marked with silver veins while the bottom is an eye-catching deep crimson. The plants feel somewhat coarse because of the short hairs on the leaves and stems. It flowers from late summer to winter with a climax in autumn. The small whitish flowers, frequently tinged with pink or mauve, are held above the leaves in upright spikes.