Family: Tiliaceae
Common Name: African Hemp

There are three species of evergreen shrubs and small trees in this genus from tropical and temperate parts of southern Africa and Madagascar. The large, soft leaves vary from simple to lobed, and the flowers are borne in clusters on long stalks. The fruit is a spiny capsule.

Species

S. africana, African hemp, is a fast-growing, spreading shrub, 3-6 m (10-20 ft) high. The white flowers, borne in clusters, have prominent, yellow and reddish-purple stamens. The main flowering is in spring to early summer, but it flowers sporadically all year round. The leaves may be oval to heart-shaped or lobed. Cultivar 'Fiore Pleno' is a double-flowered form.

S. ricinicarpa grows to 3 m (10 ft), with variable leaves and white or purple-tinged flowers, with prominent yellow stamens, produced intermittently throughout the year.

Cultivation

In areas where frosts occur, grow in an intermediate conservatory or greenhouse in large pots of soil-based potting compost. In the growing period, water liberally and liquid feed every four weeks. Reduce watering in the winter. Provide maximum light, but shade from direct, strong sun. Prune back in late winter to control size. Outdoors grow in a sunny, sheltered spot with moist yet well-drained, fertile soil. Propagate from seed sown in spring and germinated at 18°C (64°F), or from semi-ripe cuttings in summer, with basal warmth.

Climate

Zone 10 or tropical.