Rosehips are the pods that form at the base of the rose flower. Rose hips are particularly high in Vitamin C, with about 1700–2000 mg per 100g in the dried product, one of the richest plant sources.
Rose hips contain vitamins A, D and E, and antioxidant flavonoids.
Native Americans have been using rosehips as tea for thousands of years, and when the tea is finished, the hips were added to stews or soups.
To make tea with whole rosehips, you’ll need around 2 teaspoons per cup of water. Rosehip tea has a tangy, tart flavour and a pinkish colour.
See what Wikipedia says:
http://en.wikipedia.org/wiki/Rose_hips