Of the thousands of flowering plants in the Arboretum, only one, the lilac, is singled out each year for a daylong celebration. Mainly located on the edge of Bussey Hill Road in the heart of the landscape, the lilac collection at the Arnold Arboretum is among the premier collections of these plants in North America.

Tours of the lilacs and other special collections, family activities, and food vendors make for a memorable day. Be a part of this beloved Boston tradition! Check the website for the day-of schedule of events.

The Arboretum is open as usual from dawn to dusk. Activities are available from 10:00am to 3:00pm, and refreshments are available from 11:00am to 3:00pm. Free