Utah State University Extension
This fact sheet explains that blackberries can be successfully grown in Utah and can be a profitable fresh-market crop. It includes blackberry biology, results of the Kaysville cultivar trial study, and a description of the various cultivars.
Black, Brent; Lindstrom, Thor; Hunter, Britney; Olsen, Shawn; Hansen, Sheriden M.; and Maughan, Tiffany, "Selecting Blackberry Cultivars for Utah" (2018). All Current Publications. Paper 1632.