When I was planning my first plantings at Deerfield, I consulted with my friend Gabe at one of the Knoxville garden stores. He forgets in one day more than I will ever know about horticulture. We discussed apple, pear and cherry trees. We discussed the different kinds of grapes. When I mentioned I might like to try blackberries and raspberries, his famous quote was: "Even you can grow brambles."
Gabe appears to be correct.
My thornless blackberries make up the top row (photo above) and and the next row are my raspberries. This is the second year for both and they are full of blooms. I hope the deer appreciate the lack of thorns.