Although the growth of plants can not be separated from sunlight, but in recent years, due to the increase of temperature, the resistance of plants is also limited. If plants want to grow well in high temperature and hot weather, they need some protective measures. Many people are using sunshades to protect plants. Appropriate light intensity and temperature are the necessary conditions for plant growth. Generally speaking, the stronger the light, the higher the temperature. In order to make the plant can survive the summer safely, we can only make trade-offs between temperature and light intensity. Generally, we will choose to increase the shade, and reduce the temperature by increasing the shade or the number of layers of the sunscreen. For example, New Guinea Impatiens generally do not need shading or only a layer of 50% silver shading net, but in summer high temperature season, one or even two layers of shading net should be added to reduce the temperature.