Garrard Ardeneum, Botanical garden in McAlester, Oklahoma, United States.

The Garrard Ardeneum is a botanical garden spread across multiple acres in McAlester featuring plants native to the region and educational displays. The grounds include pathways through different planting areas with cultivated specimens and informational stations.

The site opened in 1990 as a combination of an arboretum and a museum, with landscaped gardens and historical artifacts at 501 North 5th Street. It has also been called the McAlester Arboretum, a name it shares with an unrelated arboretum in Columbia, Missouri. It now mainly serves as a wedding venue and conference center and is known as the Puterbaugh Center.

The place attracts people curious about regional plant life and local heritage, bringing together gardeners and history enthusiasts. The mix of botanical displays with historical objects creates a setting where natural science and community memory intersect.

Visitors should plan for both outdoor garden areas and indoor exhibition spaces, as the site combines walking the grounds with viewing historical displays. It is helpful to contact ahead to confirm current opening hours and ask about guided tour options.

The museum holds antique furniture, maps, photographs and historical artifacts, while the surrounding arboretum grows about 100 trees of 43 varieties. The site is often confused with a McAlester Arboretum in Columbia, Missouri, a separate place with the same name.