1. Out of room time

The temperature is changeable in early spring. If you move outdoors too early, you are vulnerable to wind damage and freezing damage. Therefore, the time of leaving the room is generally between Qingming and the beginning of summer. In order to prevent it from being suddenly moved outdoors, it can not accept it. Measures such as appropriately improving ventilation and strengthening illumination can be taken

2. Replace basin soil

Plants growing in limited soil are prone to lack of nutrients. It is necessary to change soil and apply fertilizer to supplement the missing nutrients and improve their nutritional conditions. The climate in spring is relatively mild, which is very suitable for changing pots for plants. It is best to use sandy soil with deep, loose soil, rich humus and good drainage

3. Fertilization techniques

In spring, plants are most afraid of excessive fertilization. Whether seedlings or chrysanthemums that have just passed the winter, their roots are relatively fragile. If they use organic flower fertilizer that is not fully decomposed or the concentration of fertilizer is very high, their roots are easy to be burned. Therefore, in spring, it is necessary to fully dilute the rotten liquid fertilizer before applying it, and control the amount of fertilizer each time, so as to achieve less fertilization and frequent fertilization

4. Prune branches

The pruning of chrysanthemum can be divided into three types: sparse branch, short cut and picking the heart. Thinning is mainly aimed at the branches that are too lush. Appropriately cutting off the too dense flower branches can ensure the light reception of the flowers, which is conducive to its later growth; Truncation refers to truncating long branches to reduce excessive loss of nutrients, stabilize the center of gravity and prevent plant lodging; The purpose of heart picking is to avoid that plants only increase height and do not grow side branches, which is not conducive to the formation of later flowers