Aspen is invariably the last tree to get its new leaves in spring, with them often not opening fully until early June in the Highlands, and it loses them in late September or early October ...

In early spring, an aspen clone will produce small ... The ability of aspen to produce whole stands of "trees" vegetatively provides yet another key element in explaining the species’ ability ...

We all know that Leaves are green in Summer, change to beautiful reds and oranges in Autumn, fall off in Winter, only to bud again in Spring. But most people don’t know why these seasonal phenomena ...