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

Identify the species: “There are 30 to 60 species of Dogwood, and they all have their own idiosyncrasies,” Zidack says. “Knowing the species lets you get more in-depth about their specific ...

The disease was discovered a decade ago in Boulder, Colorado, when hundreds of the city's black walnut trees died. It took until 2008 to identify the fungus.

Elm trees make up about 22 per cent of Edmonton’s maintained tree inventory, according to the city, accounting for about 90,000 trees. In some of the city’s mature neighbourhoods, elms make up ...

SEE ALSO: Invasive fungus that kills oak trees spreads across Ontario As of Aug. 30, a total of four trees have tested positive for the disease, the city said in a statement Tuesday.

The best way to learn tree leaves is to invest in a good reference book and start observing leaves out in the woods. A good book is the “Field Guide to Trees of the Eastern US,” published by the ...

The main feature to look for in leaf identification is shape. There are star shapes (sweetgum, maples), heart shapes (redbud), fat round ones (dogwood), and long skinny ones (willow). The most common ...

After sending the picture out to one of our UGA entomologists, our identification specialist concluded it was a European hornet and what those flying sting machines did to that dogwood was incredible.

Crape myrtle bark scales can turn the tree's beautiful exfoliating bark white with infestation or black with sooty mold. By the first week of June, the team saw three crawlers. The second week, they ...

Powdery mildew is a disease common in trees that appears as a white powdery substance on the surface of leaves. The powdery appearance comes from millions of tiny fungal spores, which are spread ...

‘Native trees’ (or indigenous trees) are considered to be those that arrived in Britain and Ireland through natural processes after the last Ice Age. Species introduced before 1500 are referred to as ...