A tree's leaves are one major marker that helps in ... Naturalist Roger Tory Peterson says that unlike the precise silhouette of birds, a tree is not so consistent in form or shape: "The beginner ...

Two physicists from the Technical University of Denmark have found that leaf shape is a determining factor in the distance ...

Leaves are food factories for the tree. Powered by sunlight, the green substance in leaves called chlorophyll, use carbon dioxide and water to produce life-sustaining carbohydrates (sugars).

Slender Silhouette' also produces very few (if any ... End of winter before the tree leafs out is the best time to prune. * Great partner: Underplant with golden spreading junipers, boxwoods ...