Begonia nodosa is also known as red begonia, red begonia and coral begonia. Brazil, native to South America. China introduced and cultivated. I like warm, humid, ventilated and semi-cloudy environment. Not hardy. It should be cool in summer and be afraid of direct sunlight. The optimum growth temperature is 20 ~ 25℃. Sufficient sunshine is needed in winter, and the overwintering temperature is above 100℃.

In hydroponics, the branches can be cut off and inserted into water, and they can take root in about 3 weeks. At the initial stage of hydroponics, the dilution multiple of nutrient solution can be appropriately increased (500 times); After the new roots were born, they were cultured with 200 times diluted solution, and the liquid level was adjusted to root 1/2. Coral begonia is a hydroponic ornamental plant with graceful posture, small flowers and delicate leaves.