1、 Increase nutrients

Primrose growth consumes fertilizer quickly. It is difficult to meet its needs only because of the nutrients in the soil. Additional fertilization is needed to supplement nutrients. Farmyard fertilizer with mild fertilizer effect and sufficient nutrients can be used for fertilizing. If the whole plant is abnormal, fertilizing can be carried out according to the specific state of Primula: the branches and leaves are small, which requires time and nitrogen fertilizer; The whole plant grows slowly and needs to use potassium fertilizer. If it needs to keep seeds, it needs to use phosphorus fertilizer. The frequency of use is twice a month

2、 Reasonable illumination

Primrose needs a large amount of light during its growth, especially in spring, so it needs to increase the amount of light. However, it is not resistant to strong light. Therefore, it is necessary to avoid strong light in the process of maintenance and only give astigmatism irradiation. The irradiation time every day shall not be less than six hours

3、 Pest control

Spring is the growth period of plants and pests. It is necessary to prevent pests. If it is found that its roots are infected with pests, it is necessary to dig out its roots, clean the pests, and then replant them. If there are pests in branches and leaves, it can be sprayed with professional insecticides

4、 Increase watering

In spring, it needs more water than other times, so it needs more watering. The amount of watering is based on the standard of fully watering the soil, and the interval of watering is about three days