What flowers are suitable for the roof at home?

Sedum sarmentosum is a good choice, and other Sedum plants can also be considered (such as fire sacrifice). They have shallow roots, short plant types, strong habits of heat resistance, cold resistance, waterlogging resistance and drought resistance, and can grow repeatedly for many years once planted. The aboveground part like the fire sacrifice can withstand the low temperature of MINUS two or three degrees, and the underground root system is more cold-resistant, so it should be safe to overwinter in Zhangzhou, Fujian. Not only that, the stems and leaves of the fire sacrifice will show bright fire red under the irradiation of low temperature and sunlight, which is very beautiful. Its reproductive performance is also very good, and each leaf can take root and sprout to reproduce into new plants. The picture below shows the fire sacrifice I planted-