Experience the springtime bloom of our renowned collection of over 400 lilacs. Visit for tours with Arboretum experts, hands-on children’s programming, and more. Picnicking in the Arboretum landscape is permitted on this day only, Sunday, May 12 from 10 – 3.
Located primarily 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. Of the thousands of flowering plants in the Arboretum (many of which can also be enjoyed at this time), only the lilac is singled out each year for a daylong celebration.
Pack a picnic and make your way to the lilac collection on Bussey Hill Road. With 407 lilac plants representing 173 taxa (kinds), the Arboretum holds one of the premier lilac collections in North America. Lilac Sunday has been celebrated at the Arnold Arboretum since 1908. Join an Arboretum expert for a guided tour of the lilac collection. Tours depart between 10:00am–2:30pm from Arborway Gate and the Ponds. Access the lilac tour—as well as over 60 additional plants and areas—on our mobile app, Expeditions. The app is available in English, Spanish, and Simplified Chinese/Mandarin. You can access Expeditions through your smartphone’s internet browser or download the app from the Apple App store and the Google Play store.
