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 ...

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 ...

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 ...

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.

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, ...

'British soldier' lichen growing on rock. (Clay Wollney) For the most part, lichens growing on trees is a good thing, not harmful to the trees. However, weak or dying trees may have a lot of lichens, ...

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 ...

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.

Forest structural characteristics manipulated by alternative thinning treatments were associated with increases in cyanolichen and alectorioid species richness and changes in lichen community ...

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 ...