Button Island is a small island in the Hingham Bay area of Boston Harbor Islands National and State Park. The island has a permanent size of under 1acres, plus an intertidal zone of a further 116acres. The island rises 10 feet in elevation and is composed primarily of glacial till. The island is managed by the town of Hingham.[1]
The island is notable for a large oak tree. Several smaller but mature oaks, linden cedars, and sumacs cover the island. Shrub species include bayberry and dewberry. Grasses and sea lavender are abundant in the tidal zone.