As Athol celebrates its 250th anniversary, the Athol Bird and Nature Club celebrates the gardens of Athol, 12 in ’12 – a self-guided tour of 12 outstanding gardens on Sunday, July 15 from 10 a.m. to 3 p.m. Four themes dominate this tour: the drama of glorious gardening and natural rock, the surprise of secret treasures, the bounty of home vegetable gardens and locally grown food, and the ecology of gardens that appeal to birds, butterflies and other…