Rosa carolina produces beautiful rose hips every year if you leave the pink flowering roses on the plant. These rose hips are actually a structure called achenes, an urn shaped receptacle that contains the fruits of the plant. Rose hips are sought after by deer, rabbits, squirrels and birds all winter long. Rose hips are very high in Vitamin C and can be used in Jellies, jams, and to make tea. The best time to harvest the hips are after the first frost but leave plenty for the wildlife.