They are hardy or some species are frost tender, min 4-10C. Grow them in sun or partial shade with fertile well drained soil. You should choose a sheltered position. Water them freely in the summer and much less at other times. Pinch out growing shoots of young plants to encourage a bushy habit.
You can propagate by seeds sown under glass in late winter or by softwood cuttings in the spring or summer.
Pests, diseases or disorders
Mealy bug and whitefly may cause problems.