John, when it comes to berries, I am quite opinionated but I have to concur with Janet. My guess is that if you can grow Boysenberries, you shouldn't have any trouble growing Marionberries. The wild (native) blackberry is part of the Marionberry ancestry too. I'm reluctant to say that the Marionberry is the "best" blackberry there is, but there are many that believe that it is. It was developed for the commercial market so the berry size and yield were major considerations. We do have the long, cool, wet springs which are the ideal climate for berry production. But even if your climate is not ideal does not mean you would not get good berries. If you ask my grand daughter which is her all-time favorite berry, she would respond with Marionberry. The university in Corvalis is always working on agricultural products and the Marionberry is one of its most successful projects. I have Cascade blackberries growing in the back yard and my daughter Fiona says those are the ultimate berry when it comes to blackberry pie. But I wonder if I could taste the difference if I didn't know which was which. I have also used Siskiyou blackberries for making jam, but I won't bother with those any more. They are more prone to developing fungus than the other berries. Obsidian blackberry is another development by the university and comes on a little earlier than the Marionberry. It is a little larger berry and is sweeter, but not quite as tart. As far as public opinion among the people in this state though, the Marionberry reigns supreme.