In order to grow properly, trees need an adequate period of warmth during their growing seasons; otherwise, the cell walls […] The post These Bizarre Blue Tree Rings Are Unveiling Details About Cold ...

The 'Blue Star' and 'Dream Joy' cultivars of flaky ... and removing any wire that could pierce the tree's bark. Your juniper bonsai needs four or more hours of daily sunlight, so you might want ...

identifying these blue rings allows us to spot cold summers in the past. By looking at pine trees and juniper shrubs from northern Norway, scientists identified two extremely cold summers in 1902 ...