Keʻanae Arboretum (6 acres or 2.4 hectares) is an arboretum and botanical garden located on the Hana Highway (Highway 360) about 1-mile (1.6 km) west of Keʻanae, Maui, Hawaiʻi, USA. It is open daily without charge.
The arboretum lies alongside the Piinaau Stream on taro cultivation terraces and within a rainforest, and contains two short walking trails. It contains about 150 varieties of tropical plants, including gingers, hibiscus, papaya, and various types of taro, as well as native and introduced trees in a natural setting. Trees are labeled with common name, scientific name, and origin.