Paper birch is notoriously messy, shedding its thin bark, flowers, seeds, leaves, and branches throughout ... (at least visually) in the aspen tree, but they are not without their fair share ...

Another feature of aspen leaves is that they are borne on ... female flowers occur on separate trees – most of our trees such as oak, birch, and Scots pine have both male and female flowers ...

Forest tent caterpillar populations have been rising in some northern and west-central Minnesota counties since 2007, and that trend is expected to intensify, officials with the Minnesota ...