Pelargoniums are found growing in most areas of South Africa in a wide range of habitats. It is impossible to lay down one set of growing requirements to suit all species. The most important consideration is to note the natural habitat and the conditions the species grows in and then to attempt to copy these natural conditions as closely as possible. Pelargoniums are easily grown, fairly adaptable plants and are most rewarding in any garden. Pelargonium cultivars have been gracing the balconies of buildings and gardens in the northern hemisphere for many years and have been rated as excellent garden plants.

Pelargonium greytonense, like most other members of the genus, is easily grown from either seeds or cuttings. Cuttings are propagated at any time of the year but best after flowering and seeding. Take semi-mature stem cuttings 150 mm long and apply a rooting powder to stimulate rooting. Place the cuttings into a propagation tray with individual cavities. The cuttings are then placed in a cold-frame or a cool well lit area to root. The cuttings will root within 3 weeks. Once the cuttings have rooted, pot into a well-drained potting soil. The soil medium is made up of equal parts compost, coarse riversand and loam. Young plants can be fed on a monthly basis with an organic-based liquid or granular fertilizer.

This Pelargonium is a winter-rainfall species. Seeds are sown in autumn. Sow the seeds in a light, well-drained potting soil mixture. Broadcast the seeds evenly in the seed tray and cover them with a layer of clean white sand or fine-milled pine bark. The depth of sowing is usually one-and-a-half times the size of the seed. Water thoroughly but gently and provide light shade. Germination usually takes place within 4 weeks. Seeds are best sown when fresh although they may remain viable for up to seven years. Pelargoniums grown from seed are generally more vigorous than those derived from cuttings. They do, however, tend to take longer to produce flowers. Plants grown from seed will show some degree of variation, and if a particular form or variant is required it must be propagated by cuttings.