Sunflower on the light requirements are not too strict, it likes the sun is also resistant to half a shade, light enough growth better. In summer, when the light is very strong, it should be placed in the indoor scattering light place to avoid direct sunlight.
For potted sunflower, we should choose acid soil and sandy loam with high humus content. We can add part of the sandy soil in peat or saprophytic soil, or mix coal cinder, river sand and garden soil together to make up the soil for cultivating it. Before planting, we can also put some dry branches and leaves at the bottom of the pot to increase the organic matter, so that the pot soil will not be poor.
The suitable temperature for the growth of bamboos is about 30 ℃. If the temperature is lower than 10 ℃, it is necessary to keep warm and cold. It is better to keep it in a warm place at home.
It likes humid environment and requires air relative temperature of 70-80%. If the humidity is too low, the tip of the leaf will dry up. During its growth season, from May to October, the basin soil must be kept slightly moist. When the air is especially dry, not only water it often, but also spray water on its leaves in time. There should be no water in the basin to prevent its rotten roots and yellow leaves.
Sunflower prefers to be fat. It is necessary to apply thin fertilizer when growing vigorously, and it is best to apply compound fertilizer to Hefei. In autumn and winter, fertilization can be reduced or not. Too much fertilization will make it lack of water, and in serious cases, it will rot and die. Therefore, it is better to dilute the fertilizer with water before fertilization.
