Boston Building Resources is celebrating the state sales tax holiday with Summer Fest, a free event featuring clearance sale prices on a wide variety of items for home improvement, hot dogs fresh from the grill, a corn hole tournament, and more. The event is set for Saturday, August 12, 10:00 a.m. to 2:00 p.m., at 100 Terrace Street in Roxbury Crossing. Visitors can browse through a wide selection of used and overstock windows, doors, and…

Sunday, August 13, Noon-3:00pm https://arboretum.harvard.edu/events/second-sundays-on-peters-hill/ Bring your family and friends to Peters Hill for an afternoon of free tours, crafts, family activities, and more! Did we mention free ice cream and bubbles? Free activities open to all ages include: Tours of Peters Hill offered in both English and Spanish Plant information tents featuring wildflowers and plant defenses, fascinating Arboretum plant highlights, know-how of Arboretum experts, and a rich assortment of cuttings to view up close…

Wednesday, August 16, 8:00–9:30am https://arboretum.harvard.edu/events/event-signup/?id=76655 Join Arboretum docent Lisa Gaquin for a brisk early morning walk along the inside perimeter of the Arboretum. This 3.5 mile walk will be fast-paced, energetic, and will involve walking over hills and rough terrain. Bring good walking shoes, water, and walking poles if desired. FREE. Registration required.

August 18-20; Friday: noon–4pm; Saturday: 11–4pm; Sunday: 11–4pm https://arboretum.harvard.edu/events/event-signup/?id=76678 The Caterpillar Lab is coming to the Arboretum! This immersive, interactive exhibit features hundreds of native caterpillars at every stage in their life cycles. Learn from the experts as you explore the displays. The Lab offers something for every age group! FREE. Registration is not required but is appreciated as it helps us with planning. There will also be a caterpillar walk on Friday, August 18…

Sunday, August 20, 1:00pm-2:30pm https://arboretum.harvard.edu/events/event-signup/?id=76835 Families need nature at all times of the year! Following a StoryWalk® path, we’ll visit a nearby forest on Arboretum grounds and look under logs for the tiniest animals of the forest floor. Free and open to all, most suitable for children ages four through ten. FREE. Registration required.

Sunday, August 20, 2–3:30pm https://arboretum.harvard.edu/events/event-signup/?id=76668 Join docent Rick Ward for a tour of Peters Hill. Learn about the history of this lesser-known corner of the landscape and the uniqueness of the plants that grow here, including its history as a “testing ground” for trees that were resistant to cold, wind, heat and drought conditions. This diverse area is home to white pines, dawn redwoods, bamboo, ginkgoes, larches, and a truly magnificent crabapple collection. FREE. Registration…