The "Oklahoma Proven!" symbol is borrowed from Oklahoma State University, and is part of an educational program to highlight species of trees, shrubs, perennials and annuals that are best suited to Oklahoma. Partners that sponsor the publication of annual selections are OSU Department of Horticulture and Landscape Architecture; Oklahoma Cooperative Extension Service; Oklahoma Agricultural Research and Experiment Station; Oklahoma Botanical Garden and Arboretum; Oklahoma Department of Agriculture, Food, and Forestry; OG&E; Oklahoma Nursery and Landscape Association; and Oklahoma Greenhouse Growers Association.

The recommended trees listed in this guide are suitable to the central Oklahoma area in general, however some may require special care and consideration for your specific site.

Trees that require special consideration will contain this note:

Notable cultural requirements or characteristics will be denoted in italics within the description of each tree.