Gesneria : Greenhouse Plants
W – warm, minimum of 13°C (55°F)
Gesneria cardinalis ‘Compacta’ (G. macrantha ‘Compacta’, Rechsteineria cardinalis ‘Compacta’ or Sinningia cardinalis) is the most commonly grown. It is easily raised from its very fine seed which should be surface sown on to moist peat-basedin spring and kept at between 18-21°C (65-70°F). Prick the out into a small seed tray and when they are large enough I would pot them three to a 14-cm (5-½ in) pot or one to an 8-cm (3-in) pot. As they grow you will notice that they arise from a small tuber. The shoots and leaves are covered with downy hair and the bright red tubular flowers are immensely showy. The plants will flower almost continuously but can be cut back when they become untidy. After a short rest small buds will appear at the surface of the tuber and will grow into a new plant.