Jamesbrittenia bergae is perhaps one of the most spectacular ornamental herbaceous plants to have been discovered in recent years. It is very easy and rewarding to grow. Plants grow in almost any soil but heavier loamy soils are preferred. They grow and flower most vigorously during the summer months where they require regular watering to keep them looking good. They can be grown easily as pot plants and make spectacular hanging baskets. They also make excellent bedding plants where they enjoy a full sun or partial day shade position. Young plants are best planted in spring as temperatures start to rise. They will grow vigorously through the summer months and slow down dramatically in autumn and winter. Plants should be pruned back fairly hard in late winter/early spring as new buds and shoots appear. Jamesbrittenia bergae is not frost-hardy.

Propagation is easy both from cuttings and seed. Seed, however, is seldom produced as plants are self-infertile and therefore two genetically different plants have to be present for pollination to take place. The fine seed should be mixed well with a small quantity of fine sand and then sprinkled over a seed tray filled with a suitable well-drained seedling germination medium in spring or early summer. Cover the seeds with a very thin layer of pure river sand or vermiculite to keep them moist. Water regularly and never let the soil dry out. Germination should take place within a few weeks and will be aided by bottom heat.

Cuttings are by far the easiest means of propagation. Soft and semi-hardwood tip and heel cuttings can be taken preferably in spring or summer. Dip the cut end of the cutting in a suitable rooting hormone and place in a well-drained rooting medium like 50/50 bark/perlite or even pure riversand will do. Keep the cuttings moist and humid by placing a clear plastic covering over the pot and keep in a fairly shady cool place. Rooting takes place within 3-4 weeks. Young plants can be pricked out and potted up in a rich soil medium and grown on.

Jamesbittenia bergae fortunately is not terribly prone to pests and diseases but mealy bug, red spider mite, white fly and aphids are always a potential problem. Most insects can be treated with organic non-toxic pest repellents available at your nearest garden centre. Fungal root infections are sometimes a problem and plants are occasionally known to curl up and die spontaneously. This can be prevented with suitable fungicides.