Fertilization needs to control a lot of things. Apart from time, what we need to do is to control the quantity and concentration. It has more roots, so it can absorb fertilizer, but it is afraid of high concentration fertilizer, so generally we can't apply human manure to it, alum fertilizer water is OK
Fertilize it according to its growth period. Generally speaking, from March to may, when its branches, leaves and flower buds grow up, what we need to do at this time is to apply fertilizer to it once a week, so that it can have enough nutrition. From June to August, it is semi dormant due to the midsummer, so it's better not to apply fertilizer at this time, or its leaves will fall and may turn yellow, or even make diseases and insect attack. But after September, it began to grow again. At this time, it was basically once a decade to apply liquid phosphate fertilizer, and after October, the supply of fertilizer stopped. If we don't stop fertilizing at this time, we can make the plant grow new leaves, but the leaves will be very fragile, and it's very difficult to winter
Generally, fertilization is different for plants of different sizes. If there is only one to two years, fertilization is not necessary, because there is enough fertilizer in the soil at this time. For plants of three to five years, from late spring to Midsummer, it can be considered to apply rare fertilizer once in 15 days. In addition, if the plant has been four years old, the spring and autumn need to apply cake fertilizer, the number of about 20 grams.
What we should pay attention to is that if the leaves of the plants are withered and yellow, most of the reasons may be that too much fertilizer is applied, so we should stop applying fertilizer, then dig out the dry fertilizer, and then water more to remove the accumulated fertilizer, and then move it to a windy place after watering. If the accumulated fertilizer is too much, it needs to be washed twice more, and it can grow up normally after half a year.
