Elm trees grow big and beautiful, with tree branches that start tall on the trunk and spread outward like an umbrella, making ...
Leaves – simple, deciduous, alternate, about 5″, coarsely doubly serrate, usually scabrous above, and often pubescent below with an inequilateral base. Twigs – slender and zigzag. Buds – 1/4″, acute, ...
Dutch elm disease is a fungal infection spread by tiny bark beetles that can rapidly wither and kill healthy trees. A new strain ... genes from an Asian species. Professor Richard Buggs, senior ...
More than 20 million trees died during the 1960s and 1970s from Dutch elm disease ... the scenes to cross elite elms with British native species to get a tree with the familiar shape and form.