Was wondering if boysenberry would grow ok in southern wisconsin zone five. I know they one boysenberry was zone 6. Or is there a certain veriaty that would do better in our zone. Thanks for your time.
There are varieties, such as the Thornless boysenberry, that are claimed to be hardy for Zone 4. I would recommend planting in a sheltered area. Here in Michigan the last 2 winters (-10F and colder) have killed blackberries to the snowline. Laying the shoots down in the winter using a swing trellis and covering during the winter has been successful here in Michigan.