Many urban canopies across U.S. cities are dominated by only a handful of tree types, putting them at risk of being wiped out ...

It is not just apple trees that woolly apple aphids are troublesome pests of, as they also feed on crab apple trees, pear trees, elm, quince, ash, hawthorn, cotoneaster and pyracantha.

Think about trade-offs. A big tree, such as an oak or an elm, will take years to grow large enough to reach shady size. On the other hand, fast-growing trees, such as silver maples, often have ...

Bismarck's Forestry Division is beginning its battle against the European elm scale. The insect feeds on elm trees by sucking sap from branches and leaves. Heavy infestations can cause stunted ...

In Syracuse, where once 50 to 60 percent of all urban trees were elms, 10,000 diseased elm trees were cut down in 1971 alone, according to the New York Times.

There are 3,398 elm trees on city property, according to City Forester Doug Wiles. About 1,750 of them will be treated, Paul Bunyan arborist Eric Christl said.

This winged-pest is bullet-shaped and has a unique metallic skin, colors ranging between purple and green. As the name suggests, they bore into the bark of ash trees, of which Vermont has three ...

A researcher recently discovered the elm zigzag sawfly infesting elm trees at the U.S. Department of Agriculture's Forest Service Northern Research Station.

A researcher recently discovered the elm zigzag sawfly infesting elm trees at the U.S. Department of Agriculture's Forest Service Northern Research Station.

A few elm zigzag sawfly larvae were first found on trees in early July and were then officially confirmed by the U.S. Department of Agriculture's Animal and Plant Health Inspection Service on July 21.

Elm-Tree Pest in AnsoniaNEW-HAVEN, Sept. 18.--A singular discovery has been made in Ansonia by Warden Wheeler. He finds that the deaths of elm trees occurring in alarmingly large, numbers in that ...

They soon become very proficient in avoiding them and destroy the grass rapidly. They remind us of the elm tree beetles that have destroyed the Yard elms, only the beetles don't know any better.