1、 Trim properly

The purpose of spring pruning is to promote the growth of new branches and concentrate nutrients. When pruning, first cut off the top of the most lush main branch to avoid top advantage. If the lateral buds grow too dense, they need to be combed slightly to concentrate nutrients

2、 Increase nutrients

Spring is its growth period, which consumes a lot of nutrients. The nutrients in the soil alone are not enough to meet its needs. If it is a newly planted plant, because there is already base fertilizer in the soil, it is necessary to increase the interval of fertilization to avoid fertilizer damage. The old plants need to be fertilized once every 15 days. The fertilizer with low fertilizer efficiency should be used for fertilizer seeds in order to avoid fertilizer damage

3、 Resume watering

During the growth period, there is a great demand for water, which needs to be watered every day. The temperature in late spring is relatively high. Watering every day can not meet its needs. It needs to be watered every morning and evening, that is, twice a day. The amount of watering should not be too much. Just ensure that the soil is completely wet and there is no ponding

4、 Enhanced illumination

In spring, cornflower has a great demand for sunshine, and the time to bask in the sun every day shall not be less than five hours. The light in late spring is relatively strong. Normal light can be seen in the morning and afternoon, but the sun is too strong at noon and needs proper shade