Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth ...

Strange blue rings found in Scandinavian trees leave scientists perplexed - Rings hint at unusually cold summers in Norway ...

you might want to incorporate some blue indoor plants. The thing about true blue plants is that they are incredibly rare; less than 1 in 10 plants produce blue blooms. Even rarer still would be a ...

The scientists collected core samples from 25 Scots pine trees and stem discs from 54 juniper shrubs, creating paper-thin ...

Blue growth rings in woody plant stems indicate years when cells failed to lignify properly due to summers that were too cold ...

J. conferta ‘Blue Pacific’ – Also called Blue Pacific Shore, this slow-growing, heat-tolerant juniper has handsome blue-green ...

Learn more about these signs of summertime cold, perhaps tied to volcanic activity in 1877 and 1902.

In Norway, scientists have found blue rings in trees that hint at how volcanic eruptions disrupted growth throughout history.