5 gardens in Idaho checked against official websites: 3 arboretums, 3 botanical gardens. Most are listed in or near Boise, Eagle, Ketchum. 1 list free general entry and 1 charge admission; the rest are unrecorded or vary.Gardens near Boise City
Admission and hours checked September 28, 2026. Prices may change.
Small downtown Eagle park with labeled plantings, including 37 tree varieties, native plants and roses, plus walking paths, picnic tables and benches.
Fifteen-acre botanical garden in Boise with seven main gardens, including English, rose, herb and native plant collections. A visit takes about 60 to 90 minutes.
Boise city arboretum with about 90 deciduous tree species and over 20 conifer species, managed by Community Forestry. Open sunrise to sunset; parking is at a nearby park.
Five-acre garden in Ketchum built around five regional plant habitats, with a greenhouse, sculpture and a Tibetan prayer wheel. Grounds are open dawn to dusk all year.
A 63-acre University of Idaho arboretum with native and introduced plants and a 1.4-mile gravel loop road. Free, open daily, with free parking.
These are gardens we could check against their own official websites, not every garden in the area. “Free” refers to general garden entry, not parking, tours or special events. We do not show live opening status.
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