When we see something weird growing on tree bark, it is usually algae, lichens, moss, or fungi (or a combination of these). These can be gray, white, green, or even orange.

Storms, pests, diseases, and overcrowding can all signal it's time to cut down a tree. Look for these signs and more to know ...

That green gunk, it’s called lichens, not mold, not tree rot. Lichens are remarkable, symbiotic organisms that consist of a partnership between a fungus and a photosynthetic partner, often an algae.

Have you ever paused beneath a towering oak or maple and wondered if that rough, gnarled bark is hiding secrets? What if I told you ... Read more The post What Tree Bark Can Tell You About Local ...

However, these incredible trees are threatened by beech scale disease, also called beech bark disease (BBD) — a condition that can lead to significant damage or even kill the infected trees.

Discover the major common tree diseases in the United States. Armillaria attacks both hardwoods and softwoods and causes either yellowing leaves or browning needles. Wood that is decaying from ...

Green bark is found on trees and shrubs of many different, unrelated species. In Australia, young bottle trees of Queensland forest and scrubland have green bark that turns dark with age.

The components are a fungus and a green alga with perhaps a blue cyanobacterium. ... Tree bark is not used as a food source. It is simply a place for attachment. It is an epiphyte, ...

Bark beetles may use receptors in their antennae to detect and feast on fungus-infected trees. The Eurasian spruce bark beetle (Ips typographus) – found in Europe, Asia and some parts of Africa ...

Sean O'Brien, from the UNH Cooperative Extension, takes a look at how beech leaf disease spreads and the signs to help you ...

The white you see on some of the loose bark is a fungus that indicates internal decay. At some point the tree was wounded, or was growing too fast to keep up and had a wound.

Q. My 20-something-old redbud tree has developed lichens on the trunk, which is a first. Do I have a problem and is there anything I should do? I have another one in the yard which doesn’t have ...