How to Make a Rose Hips Wreath. After the delicate flowers transform roses in late summer into red, orange, black or greenish balls, the rose hips appear. This rose fruits are real vitamin C bombs and can be processed in the kitchen for a delicious jam or marmalade. Only use the pulp for cooking, because lying inside nutlets rosehips are covered with fine, barb-tipped hairs that can cause allergies. Bright red rose hips make a lush door wreath that is durable over many weeks.