Garden centers in Onawa are retail firms that primarily deal in selling plants and products related to gardens. The items that can be found in these garden centers or nurseries, include annual and perennial flowers, trees, shrubs, roses, container gardens, hanging baskets, houseplants, water gardening, seeds, bulbs, potting mixes, soil amendments, mulch, fertilizers, chemicals, pottery, garden tools, fountains and garden decor.
Many such garden centers in Onawa have departments for wild bird feeding, floral gift, outdoor furniture and barbecue grills, home decor, landscape design, landscaping services and pet supplies.
Greenhouses are commonly part of a garden center. Garden centers in Onawa also employ horticulturists to diagnose problems and make recommendations to gardeners.