An extensive body of research suggests that invasive plant populations often undergo phenotypic and ecological divergence from their native sources. These changes can result due to selective pressures in the new range or through demographic stochasticity during introduction. Given the life-history traits of trees that gives them long lifespans and generation times, it is not surprising that the evolutionary dynamics of invasive trees are still comparatively poorly understood and that their invasion potential has been often underestimated. Invasive trees have significant impacts worldwide and these are increasing rapidly in many parts of the world.