The bark beetle destroying spruces in German forests due to the drought since 2018...

The spruce is not a naturally occuring tree in most of Germany. But they were planted in masses as a consequence of the allied forces after World War II as they instruced the population to cut masses of trees as burning material for heating in winter. Spruces were the fastest way to reestablish the forests, but they are more prone to drought and bark beetle ans also less resistent to severe storms.