Q: I recently noticed a black, tar-like patch on my tree trunk, though it’s not tacky like actual tar. Are these insect eggs? Dried sap? Do I try to scrape it off? The tree has lichen but I don’t ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › While bright orange or red tree markings might mean a tree is destined for removal, ...

With trees, as with elephants and in swimming, trunks are important. They’re part of trees’ beauty, strength, majesty, and mystique. We have things to discuss. Like people, trunks come in all shapes ...

Whether you live in a suburban, urban, or more rural area, chances are you've come across different colors painted on trees in your neighborhood from time to time. For example, blue or yellow paint ...

Q: Mushrooms suddenly appeared on my tree’s trunk. How can I treat them to protect the tree? A: Unfortunately, you can’t treat mushrooms growing out of wood, and the fungal growth that produced them ...

Researchers find that microbes on tree bark can alter greenhouse and toxic gases, shaping climate and air quality beyond ...