California’s trees are dying in huge numbers — and Tahoe is the epicenter June 29, 2024 Home Explore The Naturalist's Journal California’s trees are dying in huge numbers — and Tahoe is the epicenter Share FacebookTwitterEmail California’s forests continue to see mass die-offs of trees as a result of too little water, insect infestation and disease. But last year’s wet winter provided at least some relief, new federal data shows.