Why do tree leaves turn darker in summer? - Discover Wildlife

As the seasons progress from spring to summer, the light green colouration of leaves darkens. Naturalist, broadcaster and wildlife detective Ed Drewitt explains why this occurs.

Beech Leaf Disease at Cape Cod National Seashore (U.S. National Park Service)

Why Do Trees Lose Their Leaves? - Forestry and Land Scotland

Tropical Arctic: Lost Plants, Future Climates, and the Discovery of Ancient Greenland, McElwain, Hill Donnelly, Glasspool

Why Do the Leaves of Some Trees Turn Brown but Not Drop?

Why do trees wake up in spring?

The Truth About Red Maple Leaf Toxicity Cummings School of Veterinary Medicine

Complete Guide to Alder Trees

European badger guide: habitat, diet and where to see - Discover Wildlife

Gardenia Leaves Turning Brown

Why do leaves change color in the fall season?