Iowa City, IA Landscaping Rules: Native Plants (2026)

Iowa City's approach to native landscaping is voluntary and education-based. Critically, Iowa City Code section 6-3-1 (Weed Control Definitions) recognizes three categories of vegetation distinct from a noncompliant 'unmowed or untended area' (over 10 inches): (1) 'natural area,' meaning land allowed to retain native plant material in a natural prairie state; (2) 'conservation area,' meaning property planted with ground-cover plants of size and texture compatible with the environment and maintained accordingly; and (3) 'ground cover,' meaning plants with growth and root capacity to cover and stabilize an area and prevent erosion. This definitional structure provides a regulatory pathway for an intentional, maintained native or pollinator planting that would otherwise exceed the 10-inch height limit of section 6-3-2. Iowa City has no mandatory native-plant or pollinator-strip requirement on private residential lots. The Iowa Department of Natural Resources actively promotes native pollinator landscaping with educational releases on adding Iowa natives such as black-eyed Susan (Rudbeckia hirta — Iowa's state flower), purple coneflower (Echinacea purpurea), and milkweed (Asclepias spp.) species. The Iowa State University Extension publishes 'Lawn Alternatives to Turfgrass' (yardandgarden.extension.iastate.edu) noting that approximately 85% of Iowa was originally covered by tallgrass prairie. The City's Climate Action and Adaptation Plan and the Backyard Abundance / Project GREEN partnerships in Iowa City promote native plantings on a voluntary basis. Iowa Code Chapter 456A authorizes the DNR's forestry and natural-resources programs supporting native species.