Trees in fall are in a state of serious change and reorganization. The tree is becoming dormant. A tree heading toward winter will sense the changing temperature and light and obey the dormancy ...

Children take part in a tree planting event at a kindergarten in Laoling City, east China's Shandong province, March 11, 2026. China designated March 12 as National Tree Planting Day in 1979, and ...

Low-cost “tree fitbits” can pinpoint the precise timing of tree activities, like spring bloom or autumn leaf change, according to a new University of Colorado Boulder study. Researchers outfitted two ...

Low-cost "tree fitbits" can pinpoint the precise timing of tree activities, like spring bloom or autumn leaf change, according to a new CU Boulder study. Researchers outfitted two East Boulder ash ...