The presence of lichen or moss on backyard trees can understandably be concerning at first. Lichen is a combination of algae and fungus that lives on any number of solid, undisturbed surfaces, ...

Lichen grow harmlessly on tree trunks and no control is needed. In fact, presence of lichens on healthy trees should be welcomed as likely positive indicators of lower levels of air pollution and a ...

Feb. 28—March in the Northland is a month of great changes and a plethora of nature happenings. It is another month when the weather seems to get the most attention. In the beginning, it is still ...

What could possibly be inspiring about that green stuff covering Oregon’s trees? What could possibly be inspiring about that green stuff covering Oregon’s trees? Lichen is a an ecological wonder that ...