Plants The plants in the Recommended Lists from the Botanical Garden at the Cincinnati Zoo come from trials and usage in the urban/suburban, Midwest conditions of Zoo grounds and also from extensive observations of plants in public gardens and private gardens from around the region. We are very confident that usage of these plants in ordinary garden situations will result in good success, provided they are properly sited, planted, and maintained. To support the zoo’s horticultural mission by donating plants, money, or time, please contact us at [email protected].