During the planting and seedling raising period of Sweet osmanthus, it is required to apply 3 to 4 times a year. In the early spring, the buds start to grow and the roots start to absorb fertilizer. Therefore, the quick acting fertilizer mainly composed of soybean meal, pig manure, livestock manure and other nitrogen fertilizer can be applied in the early spring. At this time, the application of fertilizer can promote the growth of spring shoots. From April to may, fertilizer is applied every 10 to 15 days. In autumn, after osmanthus blooms, in order to restore the tree's vigor, manure fertilizer can be applied before winter, which can improve its cold resistance and prepare for overwintering.
The pig manure and livestock manure applied to Sweet osmanthus should be decomposed in advance. When applying fertilizer in summer, do not choose at noon or around noon, because the soil temperature is high at this time. If applying fertilizer, it is easy to burn the root system. It is better to apply fertilizer in the evening, apply fertilizer and then pour water.
