Lilla Leach was a self-taught botanist who discovered several plant species previously unknown to science.
The garden contains a native plant collection specifically curated to highlight species indigenous to the Pacific Northwest.
The aerial tree walk stands 37 feet above the forest floor at its highest point.
The manor house on the property was built using local river stone and timber.
Johnson Creek, which runs through the garden, is a salmon-bearing stream restored through various environmental initiatives.
The garden maintains a specialized collection of rare alpine plants.
The site was once the private collection and residence of the Leachs before being gifted for public use.
Leach Botanical Garden is a 17-acre public garden situated along the banks of Johnson Creek in southeast Portland. Established by botanist Lilla Leach and her pharmacist husband John Leach in 1931, the site preserves over 2,000 species of native and non-native plants. The estate features a unique aerial tree walk that provides an elevated perspective of the forest canopy. The property includes the original 1932 Manor House, which reflects the couple's personal historical influence on the landscape. The grounds transition from manicured ornamental gardens to wilder, forested riparian areas. The garden functions as both a site for horticultural research and a community green space. Its topography is notably varied, featuring a deep canyon created by Johnson Creek. The site is managed by a non-profit dedicated to the legacy of the original founders.
The aerial tree walk offers the most unique vantage point for capturing the canopy and the creek below.
Wear sturdy, closed-toe walking shoes as the terrain includes uneven forest paths and gravel trails.
Bring a raincoat or umbrella, as the Pacific Northwest climate is frequently damp even in summer.
Check the official website for current garden status before arriving, as some areas may close for seasonal maintenance.
Do not attempt to hike the unmaintained slopes or off-trail areas, as they are prone to erosion and contain hazardous vegetation.
Closed on Mondays throughout the year.
Stay on marked trails to protect fragile soil and plant life; dogs must be leashed at all times.
