Pelargonium crispum is an erect, much-branched shrub that grows up to 700 mm tall. The young stems are soft and green and become woody when older. The leaves are lemon-scented, fan-shaped and the leaf margins are crisped. The leaves are distichous, meaning that they are arranged one above the other in two opposite rows. The flowers are single or in clusters of 2or 3 and are borne on short peduncles. They are white to dark pink and about 25 mm in diameter. The flower tube is about 5–8 mm long. The species flowers from August-April with a peak in September and October. The leaves and young shoots can be used for essential oils. Leaves can also be dried and used in potpourri.
Pelargonium crispum can be grown from seed and cuttings. Sow seeds in autumn. Fill seed trays with a light, well-drained potting soil. Spread the seeds evenly on top of the soil. Cover seeds with a thin layer of white sand. Water thoroughly with watering can with a fine spray. Place trays in a lightly shaded area. Germination usually takes place within 4 weeks. Pelargoniums grown from seed are generally more vigorous than those grown from cuttings. Transplant seedlings into the garden or in pots. The plant can grow easily in a garden with damp to moist soils in full sun.
Cuttings can be grown at any time of the year. Take young stem cuttings 150 mm long and apply a rooting hormone to stimulate the rooting process. Insert them into prepared holes. The cuttings are then placed in a cold frame to root. Rooting usually takes about 3–4 weeks. Once the cuttings have rooted, pot them in a well-drained potting soil mix. Feed the newly rooted cuttings with a liquid seaweed-based fertilizer.
Pelargonium crispum is ideal for any garden as it can withstand extreme temperatures and flowers for most of the year.
References and further reading
- Goldblatt, P. & Manning, J.C. 2000. Cape plants. A conspectus of the Cape flora of
- South Africa. Strelitzia 9. National Botanical Institute, Pretoria and Missouri Botanical Garden Press.
- Van der Walt, J.J.A. & Vorster, P.J. 1988. Pelargoniums of southern Africa, vol. 3. Kirstenbosch National Botanical Gardens, Cape Town.