Explore six private gardens across Bainbridge Island and Kingston that will be open for self-guided tours to benefit the Garden Conservancy from 10 a.m. to 4 p.m. Saturday, June 30.

Special highlights include a 200-ton rock wall capped by a pastel flower collection, a terraced hillside with views of the Olympic Mountains, and access to Heronswood, a world-renowned nursery and garden specializing in rare and unusual plants.

No reservations are required, and the event will be held rain or shine. The cost is $5 per garden; children 12 and under free (payable in cash or check at each location).

Included on the tour is Huntley House (7205 NE Dolphin Drive, Bainbridge Island), where succulents ornament a 200-ton rock wall capped by a pastel flower collection, and details of color, scent, sound, and garden ornaments await.

At Frogwit by Stanton/Case (15326 East Euclid Ave. NE, Bainbridge Island), a color palette of yellow and chartreuse dominate the plantings, and a place where birds, frogs, and a sense of humor are welcome.

The Madison Hill Garden (9443 NE Valley Road, Bainbridge Island) is on a terraced hillside with views of the Olympic Mountains, featuring summer color borders, a pond, a desert garden, and vegetable garden.

The Osmun Garden (13074 Manzanita Road, Bainbridge Island) is an 8-year-old shade garden with a park-like atmosphere and many beautiful trees.

At the Skyler Garden (9734 Manitou Place, Bainbridge Island), special features include pathways under tall firs and vine maples, a kiwi arbor leading to a shade garden and small pond, and many seating areas to enjoy the views.

The Open Day also includes access to Heronswood (7530 NE 288th Street, Kingston), a world-renowned nursery and garden specializing in rare and unusual plants, located on seven acres and including garden art by several West Coast artists.

The Garden Conservancy introduced the Open Days program in 1995 to introduce the public to gardening, providing easy access to outstanding examples of design and horticultural practice, and proving that exceptional American gardens are still being created.

The Open Days program is America’s only national private garden-visiting program, and is made possible by the work of hundreds of volunteers nationwide.

Visit the Garden Conservancy and its Open Days program online at www.opendaysprogram.org.