Chrysanthemum is a short sunshine plant. Under the condition of ensuring 12 hours of light every day, chrysanthemum can differentiate flower buds as early as in the stage of vegetative growth. At the same time, in addition to short sunshine, low temperature and the temperature difference between day and night of about 10 ℃ are also needed, so the top buds of chrysanthemum can be transformed into flower buds, and then the buds can bloom. Therefore, the reason why chrysanthemum doesn't bud or bloom may be due to the lack of the above
Improper maintenance at ordinary times will also affect the flower bud differentiation of chrysanthemum, that is, the external cause of chrysanthemum not flowering. For example, the following conditions will affect flower bud differentiation: too much water at the seedling stage, not enough timely pruning, not picking and pruning at the appropriate time, improper fertilization, excessive application of nitrogen fertilizer and lack of phosphorus and potassium fertilizer, resulting in excessive growth of stems and leaves, which will make the buds on the plant become leaf buds and so on.
Generally, after the chrysanthemum normally grows about ten leaves, maintain the sunshine length within the range of 14 and 15 hours, shorten the sunshine time, and provide the chrysanthemum with the growth environment under the condition of short sunshine as much as possible, which can promote flower bud differentiation.
Remember the characteristics of Chrysanthemum "large demand, fear of ponding and drought resistance". Water in summer should be sufficient, usually once in the morning and once in the evening. The amount of water to be watered after flowering should be reduced gradually, as well as in winter. Pay attention to prevent water accumulation in the basin. Do a good job in ventilation.
When changing pots, we need to pay attention to the application of sufficient base fertilizer. For convenience, the base fertilizer can choose the leftovers at home. After autumn, the thin liquid fertilizer with full maturity should be applied every other week or so. During the period of pregnancy, 0.2% potassium dihydrogen phosphate or 0.5% calcium superphosphate solution should be added 2 or 3 times.
Picking heart can make chrysanthemum branch. Generally, it is carried out in a sunny day. After the chrysanthemum seedling has formed root system, that is, about 3 weeks after cutting, the first coring is carried out and the top shoots that have not yet been carried out are removed. When 4 or 5 leaves are grown, the leaves with poor growth will be removed. After that, the heart will be removed once every 1 month, and the heart will be stopped at the end of August. Leave good sprouts and cut off the excess to prevent wasting nutrients. Remember every time after the end of the heart, should apply a mature fertilizer, to promote the germination of healthy lateral buds.
