The Crosby Arboretum is environmental education facility located at Picayune, Mississippi in Pearl River county. It is part of the Mississippi State University.

As a dedicated environmental education center, the Crosby Arboretum is designed to educate the students of the university and the general public about environmental issues, the local ecosystem, and provide samples for botanical research.

The arboretum has multiple displays featuring local ecosystems and habitats that are found in the area. These exhibits include the Savanna exhibit, the Woodland exhibit, and the Aquatic exhibit. These area contain a healthy number of specimens for the visitor to observe and study.

The arboretum is located in a 104 acre interpretative site the features comfortable visitor amenities such as shaded areas and walkways.