The Massachusetts Horticultural Society at at 900 Washington St. in Wellesley is partnering with the Perennial Plant Association to bring gardeners together on Tuesday, Aug. 21, for the Northeast Region Perennial Plant Symposium. The day will be filled with speeches from authors and podcast hosts, including Bobbie Schwartz and Deborah Trickett, who will discuss landscaping projects, how to group together perennials plants, and how to turn your garden into a habitat for wildlife. During lunch, which is included in the price of admission ($125 per person), participants can go out to the garden and look at maintenance demonstrations. Visit www.masshort.org or call 617-933-4900.
The Sudbury Senior Center is hosting a Comfort Food Caring Café on Aug. 27 from noon to 2 p.m. for those with memory challenges and their caretakers. A free lunch and comfortable space will be provided at 40 Fairbank Road, with funding coming from Pleasantries Adult Day and Consulting Services, Orchard Hill Assisted Living, Right at Home Senior Care, and Sudbury Farms, Visit sudburyseniorcenter.org or call 978-443-3055.
People of all ages are invited to join Mass Audubon’s Firefly Watch Citizen Science Project throughout the year, but especially during peak firefly season this summer. The volunteers look for fireflies in their backyards or nearby fields and provide data to the organization, which has partnered with Tufts University laboratory professor Sara Lewis. The observations can help scientists answer questions about firefly vitality, population changes, distribution, and more. Residents in Holliston, Norwood, and Sudbury already have added their observations to the organization’s database. Visit www.massaudubon.org/fireflywatch.
The Marilyn Rodman Performing Arts Center at 1 School St. in Foxborough is hosting a free sensory-adaptive and closed-captioned screening of the film “Ready Player One” at 4 p.m. on Sept. 12. The screening will feature lower volume, brighter lights, and plenty of space. The PG-13 film was donated by the Robert Kraft Organization. Visit www.orpheum.org or call 508-543-2787.
Children ages 9 and up can learn about mosaics in a three-day workshop at the Whimsy Arts & Crafts Studio at 686 Worcester Road in Framingham from Tuesday, Aug. 21, through Thursday, Aug. 23. Students in the class, which will run from 2 to 5 p.m., will create their own mosaics. Enrollment is $280. Call 508-626-8989, e-mail firstname.lastname@example.org, or visit www.whimsyartsandcrafts.com.
The Minute Man National Historical Park at 174 Liberty St., Concord, has partnered with the Friends of Minute Man National Park and the National Park Service Regional Archeology Program to open “Parker’s Revenge,” an exhibit that details the story of Lexington Captain John Parker and his militia’s part in the 1775 Battle of Lexington. Through an interactive feature, visitors can calibrate musket balls and determine where they came from — British or Lexington militia. The museum also has rehabilitated the actual battlefield by removing debris, restoring the meadows and orchards, improving the historic militia sightlines, and developing an interpretive trail. Visit nps.gov/mima or call 978-369-6993.Cynthia Fernandez can be reached at email@example.com. Follow her on Twitter @CynthFernandez