Bark beetles are dark flying insects about the size of a grain of rice that leave tiny holes in the bark and branches of trees. Their very small grubs feed voraciously on the inner bark of trees that ...

If you have cleaned up the vegetable garden and cut back your perennials, you might be feeling just a little smug — especially since this gardening guy admits he is behind you in completing those ...

The center of a tree or shrub stem (from roots to trunk, branches, and twigs) is woody, composed of xylem cells that conduct water from the roots to the upper parts of the tree. That woody section is ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

I have been letting the grass grow right up to my tree trunks since I have been able to trim neatly with a line trimmer. My neighbor says I may be damaging my trees. Doesn’t the bark protect the tree?

A tree can look fine from the street and still be under stress. Yellowing leaves, weak growth, split bark, and early leaf drop often begin with small care mistakes that are easy to miss. Many tree ...