(June - August is FREE on Thursdays from 3 PM. - 9 PM) A great summer deal! On Thursdays from 3 PM – 9 PM, visitors can enjoy summer flowers throughout the formal gardens, woodland trails, a farm to table cafe, art shows, views of the Wachusett Reservoir, the Wild Rumpus stickwork exhibit, green spaces for picnicking and lawn games, a beer garden and much more. Children can participate in scavenger hunts, self-guided activities and the Discovery Backpack program.