Tree planting as a weapon against climate change has already been discussed for decades. Governments and Institutes vigorously promote and emphasize the amount of trees needed to be planted. “The more the better” is basically what they are advocating for. Yet, this is a misconception caused by greenwashing. It is obvious that the current methodology for urban afforestation and our attitude towards the usage of trees are problematic. The project is challenging the current attitudes on urban afforestation, exploring a paradigm shift in the understanding and operating trees and suggesting that the velocity of a city should depend on the life cycle of trees. By turning trees into an operative device, two additional objectives are complementing the current strategic plan of Milan: 1) to identify and reserve state-own territories for planting quality trees and 2) formulate policies on proper use of trees for the cultural and territorial fabric of the city. Through a series of tree planting parameters at micro and macro scale, the city will be resilient enough to regenerate itself while becoming a carbon storage.