Discover why the mighty Oak Tree was officially designated as the National Tree of the U.S. in 2004, symbolizing strength, ...

The next potential threat facing Niagara County’s trees could make the jump from across the border. Trees in Canada’s Niagara Region have been infected with oak wilt, a fungal disease that means ...

Experts recommend keeping an eye out for egg clusters and scraping them into buckets of soapy water. Officials issue warning ...

I noticed a lot of small twigs with leaves on them under my oak tree and became concerned about the oak. It is a large, ...

I’ve moved around a lot, and so have gardened in all sorts of settings. From a small, sun-trapped balcony in east London to a ...

During a particularly hot afternoon in June, my staff and I were walking a shaded trail at Garden in the Woods in Framingham ...

morgan23 / Getty Images A fully grown tree may lose several hundred gallons of water through its leaves on a hot, dry day. The same tree will lose nearly no water on wet, cold, winter days, so ...

All tree leaves exhibit margins—the blade-like edges of the leaves—that are either serrated or smooth. Leaf margins can be finely classified based on at least a dozen unique characteristics.