Surf these sites: Canadian Rose Society Winter Hardy Roses -- Links to images and descriptions of the Explorer and Parkland series of hardy and disease-resistant roses developed by Agriculture Canada. Roses for the North -- Rates 196 rose varieties and species for ability to survive and flower in USDA Plant Hardiness Zone 4a, and discusses many factors affecting rose survival in cold climates. Contains the entire text of the book. The Buck Rose Homepage -- Descriptions and pictures of many hardy roses developed at Iowa State University by Dr. Griffith Buck, and a list of nurseries selling these roses.
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