Scientists studying pine trees and juniper shrubs in northern Scandinavia are revealing the weather of the past by looking at tree rings — which can tell us far more than just the trees’ age. ‘Blue’ ...

A compact and wide-growing form of juniper, Shimpaku has arching, upward branches and light-green needles that ... If you ...

Blue growth rings in woody plant stems indicate years when cells failed to lignify properly due to summers that were too cold for normal growth. When temperatures drop, even tough trees face ...