Greening maintenance, even if watering, pruning, weeding, spraying and replanting in the later stage of greening construction are collectively called maintenance, is simple, but essential and very important. Garden companies all over the country have maintenance teams, such as Zhejiang, Anhui, Jiangsu Changjing Garden, Henan, Hebei and other places. As the saying goes, "Three-point planting and seven-point cultivation", if the maintenance work is not done well, the garden landscape that has spent a lot of money will not be well maintained, and some will soon have grassland degradation, dead trees and overgrown weeds. Therefore, the garden maintenance should implement scientific and standardized scientific maintenance management. The so-called greening maintenance refers to the management and maintenance of plants such as green space and vegetation, and it is still a new industry. Due to the particularity of the industry, it is being recognized by the society, and the maintenance management standards are set in three levels. The main contents of greening maintenance include: watering, fertilization, pruning, weeding, green space cleaning and sanitation, pest control, flood control and drought relief. Grade I: the plants in the nursery grow luxuriantly, the density is appropriate, the trees are trimmed reasonably, and the trees are neat and beautiful; Keep the nursery free of weeds; The damage degree of pests and diseases is controlled below 3%, and there is no phytotoxicity; Seedling propagation survival rate: more than 95% by bud grafting, more than 85% by branch grafting, more than 90% by hardwood cutting, more than 85% by softwood cutting, more than 95% by sowing, more than 90% by garden planting, more than 85% by purchased seedlings and more than 98% by large seedlings. The qualified rate of seedlings leaving the nursery: over 98%; The utilization rate of production land is over 95%; Flat communication without water; Nursery clean and tidy, no dead ends; Daily production and technical management data should be filed in time.

Grade II: The plants in the nursery grow luxuriantly, the density is appropriate, the trees are trimmed reasonably, and the trees are neat and beautiful; No weeds grow in the nursery; The damage degree of pests and diseases is controlled below 5%, and there is no phytotoxicity; The survival rate of seedling propagation: more than 90% for bud grafting, more than 80% for branch grafting, more than 80% for hardwood cutting, more than 75% for softwood cutting, more than 85% for sowing, more than 85% for nursery branching, more than 80% for purchased seedlings, and more than 95% for large seedlings. The qualified rate of seedlings leaving the nursery is over 95%; The utilization rate of production land is over 90%; Flat communication basically has no water accumulation; The nursery is clean and tidy, and there is basically no sanitary corner; Daily production and technical management data should be filed in time. Grade III: The plants in the nursery grow luxuriantly, the density is appropriate, the trees are trimmed reasonably, and the trees are neat and beautiful; No big weeds grow in the nursery; The damage degree of pests and diseases is controlled below 10%, and there is no phytotoxicity; Survival rate of seedling propagation: more than 85% for bud grafting and more than 70% for branch grafting; More than 70% of hardwood cuttings, more than 65% of softwood cuttings, more than 75% of sowing, more than 75% of nursery branches and more than 75% of purchased seedlings; More than 90% of the big seedlings are cultivated by field planting; The qualified rate of seedlings leaving the nursery is over 90%; The utilization rate of production land is above 85%; The communication is flat and there is basically no water; The nursery is basically clean and tidy.