Genus of about 700 species of prostrate to tree-like, evergreen shrubs from wet moorland to dry heathland in Europe, temperate Africa, and temperate W. and C. Asia. The Ericas are small shrubby plants. Their tiny leaves and masses of bell-shaped flowers are attractive, but these plants will give disappointing results in a centrally heated room. In hot, dry air the leaves drop very rapidly, so only choose an Erica for display in winter if you can provide a cool and well-lit spot. Erica require an acid soil. If the soil is not sufficiently acid the plants are unable to absorb iron. Never use hard water and make sure that the compost is never allowerd to dry out.