Evergreen shrub. The stems and leaves are luxuriant, shaped like hibiscus, and the funnel-shaped corolla is slightly unfolded, with bright red drooping. Like warmth, humidity and sunshine. Not cold-resistant, high-temperature and drought-resistant. The optimum growth temperature is 22 ~ 30℃, and the winter temperature is not lower than 10℃. Change pots in spring. Pot soil is a mixture of fertile garden soil, humus soil and river sand, and flowerpots with a diameter of 20 cm are commonly used. There are also pruning, light pruning of seedlings and heavy pruning of old plants. When the potted plants grow to 20 cm high, the core should be removed to promote branching. Keep the basin soil moist during the growth period and spray the leaves in summer. Fertilize once a month. When the branches grow tall or the flowers are scarce, pruning can promote the germination of new branches and continue to bloom. Control of pests and red spider. The optimum germination temperature for indoor potted planting in spring is 15 ~ 2 1℃. Germination after sowing 1 ~ 2 weeks; Cutting shoots in spring, cutting semi-mature branches in summer and rooting 2 weeks after cutting.