Purdue University researchers found that a subset of epidermal cells in plant leaves serves as early responders to chemical ...

Plants go through cycles based on the time of the year. It can be fun to watch a tree, for example, move from having bare branches in the winter to buds in the spring, full leaves in the summer, ...

Plants are classified as annuals, biennials or perennials based on their life cycles. Biennials, like foxglove, have a vegetative year followed by a flowering year. Perennials, including woody shrubs ...