Edgewood Botanic Garden, Botanical garden at Mount Tamalpais, Mill Valley, California.

Edgewood Botanic Garden is a botanical garden of less than one acre at 436 Edgewood Avenue in Mill Valley, on the southeastern side of Mount Tamalpais in Marin County, California. Coast redwoods (Sequoia sempervirens) dominate the landscape, and about ten other tree species grow here, some native to the area and some from other California Coast Ranges habitats. The garden is dedicated to the region's native plants and is not actively maintained.

The garden was founded to protect and display native plant species from California's coastal mountains. Over time, it became a place where visitors could learn about the original plant life of the area.

The garden is named for its Edgewood Avenue address near Cypress Avenue in Mill Valley. Its plantings are dedicated to species native to the region, and the Coast redwoods (Sequoia sempervirens) dominate the local landscape. About ten other tree species are present, either locally native or from other California Coast Ranges habitats.

The site is located near the intersection of Edgewood and Cypress Avenues and is relatively easy to reach. Though the garden is currently not actively maintained, visitors can walk through and view the plants.

The garden's roughly ten tree species, besides the dominant coast redwoods, are either locally native or drawn from other California Coast Ranges habitats. The site is not actively maintained, so the plantings have grown into an informal, uncurated stand rather than a labelled collection.