Overview

• The Greens in Berlin’s Abgeordnetenhaus propose planting one million new trees across the city to combat extreme heat and protect vulnerable groups.
• The Baumgesetz cleared by the Senate in June would require 300,000 additional street trees and improved sidewalk planting to boost water absorption.
• Critics accuse the ruling SPD–CDU coalition of felling thousands of trees each year without replacement, leaving 430,000 street trees weakened by drought.
• Annual costs for planting and maintaining new trees are estimated at €500 million, fueling debates over funding priorities for urban climate adaptation.
• A likely referendum alongside next autumn’s elections could force the coalition to adopt stronger heat protection measures if lawmakers fail to act.