Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth don’t lignify properly, creating blue rings that appear when wood samples are dyed. Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth don’t lignify properly, creating blue rings that appear when wood samples are dyed. Ecology Cell & Microbiology Phys.org – latest science and technology news stories
Curious blue rings in trees and shrubs reveal cold summers of the past—potentially caused by volcanic eruptions
