36 Mitchell Lane, Bridgehampton. Saturday, 10 a.m.-5 p.m., and Sunday, noon-4, through May 25, and Sept. 4 through Oct. 31. Wednesday and Thursday, noon-5 p.m., and Friday, noon-dusk, Memorial Day through Labor Day. 537-7440, peconiclandtrust.org
Owned by the Peconic Land Trust, Bridge Gardens has five acres of woodland, rose, and lavender gardens as well as lawns, walks, pools, an ivy maze, and herb and knot gardens in its inner area. The two are divided by a double privet hedge with a concealed walk. • Beginning Aug. 3, Fridays at 6 features music by Charles Certain and Friends, Jim Turner, Joe Hampton and the Kingpins, and, in June, a concert with the Bridgehampton Marimba Band. Take a picnic and a blanket. • Admission $10 each, $20 for a family of four; seasonal memberships available. Yvette DeBow-Salsedo has information at 283-3195 or by e-mail at firstname.lastname@example.org. Membership rates are $50, $75 for a family of up to four people.
GARDEN CONSERVANCY OPEN DAYS
The Garden Conservancy’s Open Days Directory of gardens in 14 states costs $21.95 and includes private garden listings in the Midwest and on the East Coast. More information can be learned by calling 888-842-2442 or by visiting www.opendaysprogram.org.
HORTICULTURAL ALLIANCE OF THE HAMPTONS
Bridgehampton Community House, Main Street, Bridgehampton. 537-2223, hahgarden.com
The alliance’s programs are usually held at the Bridgehampton Community House, where it also maintains a horticultural library and office. Annual membership, $45, or $75 for two or a family; P.O. Box 202, Bridgehampton 11932. Lectures are free for members, $10 for nonmembers.
Sagg Main Street, Sagaponack.
Madoo will also inaugurate a series of six painting workshops led by Eric Dever, to begin in early spring.
MIMI MEEHAN’S NATIVE PLANT GARDEN
Behind the Clinton Academy, Main Street, East Hampton.
This garden of indigenous plants is open without charge as a gift to the community from the Garden Club of East Hampton, whose members plant and maintain it.
Mulford Farm, 10 James Lane, East Hampton.
The East Hampton Garden Club cares for this 18th-century dooryard garden at the Mulford Farm. It has more than 126 heirloom plants grouped by use: medicinal, edible, dyes, and housekeeping. Like the garden at the Clinton Academy, it is open without charge.
Rogers Memorial Library, 91 Cooper’s Farm Road, Southampton. 917-881-0857, Southampton-rose-society.org.
The Southampton Rose Society, a nonprofit organi