Elm seed bugs are native to Europe and the Mediterranean and were first documented stateside in Idaho in 2012. In 2017, the species was discovered in Colorado in Mesa, Delta and Montrose counties.

Please note that not all elms are bad. Several elm tree species are highly recommended for our urban landscapes. These much more desirable trees include the lacebark elm (Ulmus parvifolia, aka ...

The Siberian elm is considered a “trash tree” and Michael Dirr, author and professor of horticulture at the University of Georgia, has denounced it as “one of the world’s worst trees.” ...

The Chinese elm is sometimes mistakenly called Siberian elm and vice versa. But the Siberian elm, Ulmus pumila, is an undesirable and inferior tree, bearing no resemblance to its Chinese cousin ...