Answer: That orange growth is lichen, not a rust pathogen. Lichen do not harm the tree or shrub in any way. They tend to grow only on that outer bark and stay there, not growing deeper into live ...

If you take a close look at some of the more established trees in your landscape, you may notice something you cannot seem to describe – it may look to you like a kind of fungus on your tree trunk. Is ...

The lichen themselves will not cause decline, but they may be a good indicator of the overall health of your tree. An abundance lichen presence concentrated on damaged or dead wood, as your sample ...

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, ...

Q: I have a 27-year-old "Snowdrift" crabapple tree in the front of my home. It looks to have lichen on it - it looks like greenish-gray leaf-like spots all over the tree. I have been pruning it every ...

Q: I am worried about the grayish-green, flaky, roundish spots I am seeing on big tree trunks and branches this spring. I can scratch it off with my fingernails. I think that it is killing my trees.

Those green-blue growths that you see on tree trunks and branches are not mosses. They are lichens. Lichens are not killing your tree, nor are they causing it to fail. They are telling you something ...

EAST TEXAS (KLTV/KTRE) - Often is heard, “That green and grey fungus is killing my tree! See there? It’s all over those limbs!” The “fungus” referred to is probably lichen. Lichens are often blamed ...

Once upon a time, my street used to be loaded with towering, shade-providing tall trees. It was a gorgeous tree-lined street, similar to the reputable Tree City USA award-winning streets throughout ...

Q. Please tell me what this is. Is it the reason my redbud tree is dying by degrees? I’ve also seen some on my Japanese maple and a Virginia pine. Should I be worried? — J. Castelloe, Chesapeake. A.

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 ...