In pruning, according to the principle of "the tree's central axis should be obvious, strong and powerful; the main and secondary are clear, the branches are subordinate; the number of trunk branches is appropriate, the distribution is reasonable, and the arrangement is staggered", cut off long and thin branches, and diseased and insect branches to facilitate the beautiful shape of osmanthus, ventilation and light, and nutrients are concentrated. This
plows the soil in time to destroy the living environment of diseases and pests, and prompts them to be exposed to the surface and die. For the soil on the trunk base, the moss should be scraped off with bamboo slices, and then sprayed with 1%-2.5% ferrous sulfate or 6%-7.5% caustic soda water. Apply 6.5%-10% lime milk to eliminate parasite eggs in cortical cracks; for pests such as whitefly , red spider , spray with leguo, DDT , and pesticides 1000-1500 times.
0℃ below, osmanthus will suffer from different degrees of freezing damage. How can I ensure that osmanthus flowers overwinter? After the winter solstice, the osmanthus trunks should be tied with straw ropes, generally it is appropriate to tie them to about 1.5 meters above the ground; you can also use plastic film to cut into strips to wrap the trunks, 1-1.5 meters above the ground. If it is snowing for 300 days, you can use light-transmitting plastic film to wrap the osmanthus trunks, and be careful to leave 1-2 small pores.
