Boston Building Resources will mark Earth Day on April 22, with a celebration from 11:00-2:00 that will include:

• A plant exchange from 11:00-2:00, organized by The Trustees of Reservations. Seeds, seedlings, bulbs, and rhizomes can be donated and/or taken for free.

• Food fresh from the grill.

• Live music from the Mighty Silverbacks starting at 12:00 noon.

• A limited-edition Earth Day T-shirt will be available for sale.

• Customers who spend more than $20 on April 22 will receive a free BBR pocket screwdriver with four different bits.

Environmental sustainability is a core value at Boston Building Resources. The Reuse Center at BBR takes in donations of building materials, eliminating the environmental impact of needless waste and making materials available at affordable prices to low- and moderate-income homeowners. Two years ago, the Reuse Center building was remodeled to a zero-carbon standard, with all the power needed to operate the building generated by a rooftop solar array. It is Mission Hill’s only zero-carbon building. The Co-op at BBR carries rain barrels, home compost bins, and products to help people conserve energy and live sustainably.