The Garden Conservancy, which is the only nonprofit organization in the United States dedicated to the preservation of gardens, offers this list of great U.S. gardens and flower-viewing events.

• Birmingham Botanical Gardens, 2612 Lane Park Road, Birmingham, Ala., (205) 414-3900, www.bbgardens.org. Open daily.
• Bridge Gardens Trust, 36 Mitchell Lane, Bridgehampton, N.Y., (631) 537-7440. Open 2 p.m.-5 p.m. Wednesday and Saturday from late May through late September.
• Chanticleer, 786 Church Road, Wayne, Pa., (610) 687-4163, www.chanticleergarden.org. Open 10 a.m.-5 p.m. (and until 8 p.m. on Fridays, May through August) Wednesday through Saturday from April through October.
• Chase Garden, Orting, Wash., (206) 242-4040. Open to the public May 8, or by appointment.
• Chicago Botanic Gardens, 1000 Lake Cook Road, Glencoe, Ill., (847) 835-5440, www.chicago-botanic.org. Open daily.
• Desert Botanical Garden, 1201 N. Galvin Parkway, Papago Park, Phoenix, (480) 941-1225, www.dbg.org. Open daily.
• Dumbarton Oaks, 1703 32nd St. N.W., Washington, D.C., (202) 339-6401, www.doaks.org. Open 2 p.m.-5 p.m. Tuesday through Sunday.
• The Fells at the John Hay National Wildlife Refuge, Lake Sunapee, Newbury, N.H., (603) 763-4789, www.thefells.org. Open daily.
• Garden in the Woods of the New England Wildflower Society, 180 Hemenway Road, Framingham, Mass., (508) 877-7630, www.newfs.org. Open daily April 15 to June 15; open Tuesday through Sunday, June 16 to Oct. 31.
• Garland Farm (home of the late Beatrix Farrand, a renowned garden designer), Mount Desert Island, Maine. Open July 25; otherwise write to the Beatrix Farrand Society, P.O. Box 111, Mount Desert, ME 04660, for an appointment. Visit www.members.aol.com/SaveGarlandFarm for details. In nearby Northeast Harbor, two gardens open daily — the Asticou Azalea Garden and Thuya Garden — feature plants from one of Farrand’s estates.
• Longwood Gardens, Route 1, Kennett Square, Pa., (610) 388-1000, www.longwood

gardens.org. Open daily.

• McKee Botanical Garden, 350 U.S. Highway 1, Vero Beach, Fla., (772) 794-0601, www.mckeegarden.org. Open Tuesday through Sunday.
• Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, (800) 642-8842, www.mobot

.org. Open daily.

• Monticello Gardens (home of Thomas Jefferson), two miles southeast of Charlottesville, Va., (434) 984-9800, www.monticello.org/gardens. Open daily.
• Montrose, 320 Saint Mary’s Road, Hillsborough, N.C., (919) 732-7787. Tours by appointment Tuesday, Thursday and Saturday. Open to the public May 15.
• Peckerwood Garden, 20571 F.M. 359, Hempstead, Texas, (979) 826-3232, www.pecker

woodgarden.com. Open to the public 1-5 p.m. March 20-21; April 3-4 and 17-18; May 1-2 and 15-16; June 5-6 and 19-20; and Oct. 2-3 and 16-17.

• Portland Classical Chinese Garden, N.W. Third and Everett streets, Portland, Ore., (503) 228-8131, www.portland

chinesegarden.org. Open daily.

• Stonecrop Gardens, 81 Stonecrop Lane, Cold Spring, N.Y., (845) 265-2000. Open to the public April 11, May 9, June 13, July 11 and Sept. 19, or by appointment.
• Strybing Arboretum and Botanical Gardens, Ninth Avenue at Lincoln Way in Golden Gate Park, San Francisco, (415) 661-1316, www.strybing.org. Open daily.
• Wave Hill, 675 W. 252nd St., New York, N.Y. (718) 549-3200, www.wavehill.org. Open Tuesday through Sunday.