March 20 Spring Gardening Series: Lawn Care. Checkoff your spring chore list to ensure a beautiful lawn year round. ISU Extension and Outreach and Project AWAKE have partnered to offer a spring gardening series on March 6, 20, and 27 at the Newton Arboretum and Botanical Gardens’ Krumm Center. This event is free and open to the public, no registration required. Attend one or all three.