The rapid development of the roof garden intensified the contradiction between water consumption in the roof garden and water shortage in the city： The research and application of the water-saving techniques for roof garden were necessary. On the basis of the analyses to the problems of water usage in roof garden, the viable water-saving techniques for the roof garden were pointed out, which included choosing the drought-resistant plants and arranging water-saving plant patterns, strengthening the ability of water storage of the planting soil ...
