Saving the ash forests of Britain from the devastation of an emerging fungal menace could actually be fun – if a computer game devised by botanists is a success. Facebook enthusiasts will be able to ...

Leaves – Similar to Fraxinus americana, but leaflets often narrower and always with some serration; opposite, deciduous, pinnately compound with 7-9 3-4” leaflets; ovate with smooth margin; more or ...

This once popular shade tree has become a bane to city streets because of one small beetle - the emerald ash borer. After Dutch elm disease so heavily impacted American elms in the 1950s and 60s, many ...