(2) Water and drainage. Osmanthus fragrans is mainly watered within one month after new planting and in the summer of the same year. Newly planted osmanthus fragrans must be watered and permeable, and the canopy of the plant should be sprayed with water conditionally to maintain a certain air humidity. Osmanthus fragrans is not tolerant to waterlogging, so timely drainage or transplanting waterlogged plants, combined with certain sand planting, can promote the growth of new roots.
(3) Rational fertilization. Fertilization should be based on the principle of thin fertilizer and diligent application, with quick-acting nitrogen fertilizer as the main fertilizer, and medium and large seedlings should be fertilized three or four times a year. In early spring, apply organic fertilizer to the tree tray to promote the growth of spring shoots. Inorganic fertilizer or garbage miscellaneous fertilizer should be applied in early winter. In the meantime, fertilization can be applied once or twice according to the growth of osmanthus fragrans. Newly transplanted osmanthus fragrans should not be topdressed too early. The base fertilizer of the transplanting pit should be mixed with soil before covering it.
(4) plastic trimming.
(1) Bud peeling: During germination, the useless buds at the lower part of the trunk are peeled off.
(2) Thinning branches: keep a certain branch height and cut off useless branches. Generally, the branch height of osmanthus fragrans is about 1.5 meters.
(3) Short-cutting: Cut off the top branches that are growing too vigorously, so as to keep the height of osmanthus fragrans at about 3.5 meters and the crown width at 2.5 to 3 meters.
Disease control:
Osmanthus fragrans brown spot, Osmanthus fragrans wilt and Osmanthus fragrans anthracnose are common leaf diseases, which can lead to premature defoliation of Osmanthus fragrans, weaken plant growth potential and reduce flower yield and ornamental value.