The aptly named slippery elm tree, or Ulmus rubra, is a deciduous tree that is native to most of North America, and it was designated as a specific species in 1793 by Gotthilf Muhlenberg, a German ...

In the 1960s about 80 per cent of the city's elm trees were killed by an outbreak of Dutch elm disease — a fungus that blocked the tree's water conducting system. But thanks to new hybrid ...

One of the largest old elm trees in Toronto — possibly in all of southern Ontario — is on its last legs. But as the city finalizes plans to take down the Barton Avenue landmark next week, a ...

David Taylor, a forest botanist with the US Forest Service and Department of Agriculture, explains how someone cut a slippery elm tree with an axe or hatchet, and then stripped its bark from the ...