Luther Burbank studied and hybridized raspberries more than any other horticulturalist. He wrote that raspberries were cultivated in Europe for centuries and grew wild from Greece to Spain. The Romans spread raspberry seeds throughout their empire, as evidenced by archaeological finds of raspberry vines in England. William Prince established the first nursery in the American colonies in 1737, offering raspberry plants for sale. Burbank introduced many raspberry hybrids to American horticulture. Raspberry bushes grow up to 3 feet tall and the berries easily separate from the stem when picked. Raspberries are an important food source for wildlife and are best marketed through pick-your-own operations due to their short shelf