Take a day trip from Wellesley College with the Wellesley College Friends of Horticulture.  Travel by car north to visit Bedrock Gardens in Lee, New Hampshire, pictured below, and other nearby gardens of note, with an optional stop at Fuller Gardens.  The fee ($48 for WCFH members, $60 for non-members) includes lunch.  Contact horticulture@wellesley.edu for more details.