When we see a flower or tree in our garden, we are often unaware of the myriad ways in which that plant’s growth and form is affected by other organisms and its environment.  This three consecutive morning course will explore key concepts in plant ecology with environmental scientist Katie Alt Griffith.  Each session will start with a lecture in the Wellesley College Botanic Garden Visitor Center and then move outdoors into the botanic gardens for observational studies and other structured activities in the field.  Please bring a notebook or journal and pencil, as well as a hand lens (available at Staples) and a field guide, if you have them.  Dress appropriately for going outdoors, rain or shine.  The botanic gardens contain stairs and uneven surfaces.  This course is co-sponsored with Arnold Arboretum of Harvard University.  WCFH members $75, non-members $90.  For more information, or to register for course number HOR 10 020, log on to www.wellesley.edu/WCFH, or email horticulture@wellesley.edu.