In countless ways, trees are the root of our thriving communities Trees lower energy costs, boost property values, reduce stormwater expenses, create jobs and support economies across Illinois.

If you’ve ever considered planting a tree, now is the perfect time to do so. Most trees go dormant in winter, making transplanting less shocking.

It’s not just tree trunks that hold secrets of the past – thick, woody roots also have annual growth rings, and like tree cookies, scientists can cut root cookies to learn about changes in the ...

Tree roots growing at or slightly above the soil surface are called surface roots. Homeowners having trees with these surface roots are frustrated with the additional challenges posed by mowing and ...

Nagoya University scientists have developed a method for the direct observation of fine roots, which control the uptake of nutrients and water by trees. This provides a valuable addition to the ...

Given a binary tree root, a node X in the tree is named good if in the path from root to X there are no nodes with a value greater than X. Return the number of good nodes in the binary tree. Whenever ...