The Souris Raspberry, Rubus idaeus 'Souris', is a deliciously sweet, red raspberry. This improved variety from Canada is more productive and shows better disease resistance than some of the old standards. It is a summer-bearing raspberry, and is perfect for eating fresh and for baking. Compared to the old standard Boyne, Souris is slightly sweeter, more productive and has better spider mite resistance. Canes have sparse, short spines and grow to a height of 3-5 feet.
The berries are versatile and can be used as fresh fruit, in preserves, or in pies and pastries. Raspberries may be grown successfully at an elevation as high as 7,000 feet. They do best in full sun on non-alkaline, fertile loam soil. However, they may be grown in partial shade or under other environmental constraints. Natural protection against strong winter winds are provided in some valleys, but in other areas it is necessary to provide artificial protection during winter months. Although a well-drained soil is essential for success, a sandy soil will need to have plenty of organic matter incorporated in preparation. Raspberries need a plentiful supply of moisture throughout the growing season. Raspberries take little space and live for years. Birds also love the fruit, so you may have to share the harvest.