Lachenalia, which belongs to the Hyacinthaceae family, is a genus of bulbous plants from southern Africa. The genus consists of nearly 130 species, most of which are quite short in stature with only a few exceeding 15cm. Many have large, eye-catching and ornamental flowers in an assortment of colours ranging from sea-green or blue to rich red and clear bright pink, often accompanied by attractively marked leaves. A handful of species are found in Namibia, but most are South African endemics with the greatest diversity found in the Western Cape. The genus name Lachenalia commemorates the Swiss botanist Prof. Werner de Lachenal (1739-1800) who was stationed at the University of Basel during the late 18th century. Propagation from seed is easy and straightforward and they are well suited to rockeries and being grown in pots.

Lachenalia sargeantii is a rare South African endemic perennial flowering geophyte found in the Western Cape where it occurs in the Bredasdorp Mountain on rocky summit ridges and north-facing slopes in sandstone fynbos. Flowering happens during spring. The top of the flowering stem has flowers that are maroonish purple to bright magenta. Growing from 20 to 30 cm, flowers are on long pedicels, nodding, cream or pale green with green or brown markings and included anthers.