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 ...

At this time of the year, talkback listeners are often picking up the phone to complain about the Lichen that become more and ...

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 ...

On the bark of my tree, I noticed grayish growth. I can peel this growth off easily. What is this growth and is it hurting my tree? I have been asked some form of this question in Possum’s, on the ...

More than 1,000 species of lichen grow in Washington. All of them offer a window into profound biological cooperation.

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, what are ...

I know many of us want winter to come to an end, but I would like just one more good snowstorm. I love all seasons, but I need a little more of that winter bleakness in the woods, primarily to help me ...

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 ...

It seems like the lichen on my tree exploded this year. It’s all over some branches, whereas it used to be only in random spots on the trunk. I’ve been told not to worry about your average gray-green ...

Question: One of our trees has developed a rust-colored stain at the base. Can you tell what this is and what we need to do about it? Sid G., Vallecitos, NM (submitted via NMSU Extension Agriculture ...