At the same time, the tree seals the cut, so that when the leaf is finally ... the leaves stay on the trees during winter and keep their green color. Most of the conifers - pines, spruces, firs, ...

The Green Macomb Tree and Plant Sale offers a variety of trees and plants for eco-conscious buyers until April 4.

When leaves are green they are working as organs for the tree. The green colour comes from a part of the cell called chlorophyll, which processes sunlight into sugars that the tree can ‘eat’.