Propagation
Sow fresh seeds thinly in boxes and prick out when large enough to handle. Plant out and space 25 to 300 mm (1ft) apart.
It takes 12 weeks to produce flowers from seed.

Culture
Young plants can be disbudded to promote a larger plant and some cultivars, particularly double flowering type may require staking.  Prune back after main flowering period to encourage a second flush of flowers.

Botanic information
Leaf: The dull green leaves are slightly hairy and soft to touch. They may be arranged alternately or oppositely and are ovate to elliptical. The petiole is short and the apex is obtuse to acute. Grandiflora has larger leaves.

Flower: The multiflora group has funnelform flowers that are white, orange and red. The Grandiflora group has larger funnelform flowers with ruffled margins and are available in a wide range of colours and both flower types appear solitary during summer.

Fruit: The 2-celled capsule contains numerous very small seeds with up to 10,000 per gram.