2 gardens in Montana checked against official websites: 2 botanical gardens, 2 arboretums. Most are listed in or near Jefferson City, Billings. 0 list free general entry and 2 charge admission; the rest are unrecorded or vary.
Admission and hours checked September 28, 2026. Prices may change.
Six acres of gardens and an arboretum near Jefferson City, with a nursery and gift shop. Gardens open from Mother's Day through October, weather permitting.
A 70-acre zoo in Billings that is also a botanical garden and accredited arboretum; plantings are seen with zoo admission. Pets are not allowed.
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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