The Arnold Arboretum of Harvard University hosted Lilac Sunday May 12 to celebrate the annual blooming of its lilacs. The celebration started in 1908, when The Boston Globe highlighted the Arboretum’s...

A volunteer shows a child and their mother a presentation about how trees work under stress at a tent labeled “Arboretum Researchers.” The station showed various research projects that are in-progress...

A President Lincoln lilac hangs from a lilac bush. This lilac was named in honor of former President Abraham Lincoln.

A guide explains the origins of a Blanche Sweet lilac. The lilac guides were all volunteers who studied and enjoyed showing people the various lilacs on Lilac Sunday.

Children draw on the pathway with colored chalk. Professional chalk artists created drawings for Lilac Sunday.

A group of children play a game of Jenga with giant, animal-themed blocks. The game aimed to teach children how the food web works and was made by Mothers Out Front, an organization of mothers that teaches...

Children and their families partake in the family activities station. The station involved several interactive activities like arts and crafts.

A chalk drawing on the sidewalk dedicated to a child’s mom. The chalk drawing was just one example of Mother’s Day being celebrated in the Arboretum, with other chalk drawings representing a mother...

Families picnic near Bussey Hill on Central Street. Many families came to not only see the lilacs bloom but also to eat together and relax in the open atmosphere.