It is more difficult to transplant trees in summer, because the summer weather is hot, and the demand for water is quite high. At this time, transplanting by cutting roots will greatly reduce the ability of trees to absorb water, which is likely to cause insufficient water supply in the branches and leaves of trees and lead to the death of trees. Therefore, the general landscape engineering construction will not choose to transplant trees in summer. Of course, everything is not absolute. Trees can survive in summer as long as measures are put in place. For example, the transformation of Shanghai People's Square in 1994 was carried out during the midsummer, and the results were very successful. However, after all, the cost of measures is too high, and it may not be worth the loss.