Avonia quinaria is a dwarf perennial caudiciform succulent usually deep-seated, that flush with soil surface in habitat. The stem (caudex) is turnip-shaped, fleshy to somewhat woody, flattened above, up to 2 inches (5 cm) in diameter, with a spherical crown of thin branches up to 1 inch (2,5 cm) above ground. Branches are sub-terminal, numerous, sterile and flower-bearing, undivided, very short, up to 0.08 inch (2 mm) thick. Leaves are very small, semi-orbicular flattish, completely hidden by the stipules. The flowers are purple or pink, up to 0.6 inch (1,5 cm) in diameter and up 0.2 inch (6 mm) long.
Although regarded as a choice and difficult plant, in cultivation it is relatively easy. Avonia grow very slowly and requires careful cultivation. Clustering in cultivation, if grown correctly, it will reward the grower with generous displays of tiny flowers. Avonia grow well at moderate to cooler temperatures in partial sun. Bright light enhances leaf colors and makes for a compact plant. They enjoy a gritty free-draining soil with added organic material and low to moderate watering depending on the species.
A collection of these plants can be housed in quite a small space. Seed that germinate at 59°F to 70°F (15°C to 21°C). The seeds germinate very quickly. In cultivation the young Avonia plants develop much quicker than in their natural surroundings, where they don’t get ample water supply. Generally they are not easy to raise from seed as too much water kills them immediately, which also happens when they are not watered at all