Promisek at Three Rivers Farm in Bridgewater will participate in the state's ninth annual Historic Garden Day June 24.

In 1921 Beatrix Farrand designed a formal garden on this property for Dr. Frederick Peterson, a noted New York neurologist, who entertained family, friends and clients on his country estate, which he called Three Rivers Farm.

By the time the 300-acre tract was acquired in 1978 by Promisek, all traces of the garden's former glory had been buried under years of overgrowth.

In 1992 a local resident and garden historian rediscovered the historic value of the walled garden, and a restoration began using the plan found in the Farrand archives at the University of California at Berkeley.

The garden will be open from noon to 4 p.m.

The garden at 694 Skyline Ridge Road will also be open July 29 from noon to 4 p.m.

For more information, visit www.promisek.org.