A fruiting body of a rose plant, though not all roses have them. Left on the plant, they will turn red which can be a distinct attraction during the winter. The hips do cause the rose plant to stop blooming, so deadheading remontant roses can improve later crops of flowers. Rose hips are one of nature's most concentrated sources of vitamin C. They are dried and used in herbal teas and made into syrups and jellys. In New Jersey if the dear don't eat the flowers, then they do eat the hips.