Thanks for the info on the brambles. I prepared a raised bed for more raspberries, and a row in ground for blackberries. Both are 24 feet long. I have grown raspberries for some time. I'm more interested in making jam as family and friends count on me to make it every year, the demand has exceeded the supply! Anyway I need a tart berry. I figure I could probably harvest early to get that with any berry. I also like to grow unusual cultivars. I have been looking for Valentina cultivar raspberry from the UK. It is an orange colored variety that is highly disease resistant and very tasty too! Anybody having it, man I would love a sucker or even a cutting of that one! On blackberries it sounds like Triple Crown is a for sure winner. Others on this site have mixed reviews. Probably depending on location if plants performs well. The hybrids sound interesting, and obviously the thorny boysenberry is a winner. I wanted to add one from Berries unlimited, but at the time they were out of stock. They have them in now. But I already ordered a thorny one from Raintree. Sounds like a good berry for jam too, starting off tart, then becoming more sweet. I'm trying the wyeberry. It will be planted this year, so no report on it for awhile. Talk about hard to find! Looking for some time, finally obtained one, but super small, I may grow in a pot until bigger.

The price is too much, especially when The National Clonal Germplasm Repository at Corvallis, Oregon, sends out plants for free. I put in an order on line there last year for two Rose de Cote d'Or raspberry plants, after David Karp raved about their taste in his article. Two tiny, rooted cuttings arrived a few weeks ago, after around a year's wait, and are leafing out nicely in their one gallon pot. There might not be enough chill here to fruit them, but it's fun trying. Several French websites report that it's one of the most aromatic raspberries in existence. Here is a link that might be useful: NCGR-Corvallis - Rubus Germplasm

I overwintered several varieties of trailing blackberries that I planted in the ground. Siskiyou and Kotata handled the cold well. I really like the Siskiyou blackberries but the Kotata didn't seem to have a lot of flavor. Both of these varieties are growing like crazy this year since the temperatures have been lower and the rain has been consistent. I think my Kotata may have 20ft canes this year though Siskiyou has been even more vigorous. I have added Newberry and Columbia Star this year. My boysenberries suffered a trifecta of vole damage, cane borers, and cold damage. I had to remove a whole 15ft row of them and start over. The few berries I ate off the potted boysenberries were really good if I left them on and get very ripe. The loganberries though, didn't not have a great flavor, in my opinion. I wonder if some of these varieties just don't ripen properly in my climate. The best tasting berry this year was Marion. They had a tough time with the cold but what lived produced excellent tasting fruit. How well did yours overwinter? This post was edited by jtburton on Tue, Aug 5, 14 at 22:44

The coldest temperature at my house was -8F but I had five nights at -5F or lower. I had some winners and losers but I think I also benefited from solid snow cover for the coldest parts of the winter. I covered my trailing berries with row covers too. My Siskiyou and Kotata blackberries didn't have any dieback and kept most of their leaves. Both are already sprouting leaves and the Siskiyou are kicking up new cane sprouts already. Interestingly, the Kotata escaped vole damage although they were in between fully consumed plants. I think that because they are so thorny, that the voles decided to bypass them. My row of boysenberries were covered but could not lay flat, so they only had partial snow cover during the winter. They had some dieback but were impacted more by voles (mice) and cane borers. I lost about 80% of the canes in total. It does look like boysenberry (thorny) plants are reasonably hardy. I had a couple of boysenberry plants in pots that I moved inside in mid-winter (after the -8F temps) and they had about 30% winter kill but they are also leafed out and getting ready to bloom. My marionberry plants that were planted in ground had about 50% dieback but they also had some cane borer damage. They are leafing out now and I should have a decent amount of berries from them this year. Loganberry plants overwintered with about 30% dieback but they had decent loss from cane borers. They are popping leaves and canes now. My Obsidian blackberries died a horrible death from vole damage. There wasn't much left of them. I decided to pull them since they seemed to have a leaf curl problem last year anyway. My black diamond survived the winter but lost it canes to cane borers (I had to prune them off). I'm going to remove black diamond and replace it with Columbia Star. I did leave a wild treasure uncovered all winter and it survived but anything above the snow line died back. My semi-erect blackberries (triple crown and black satin) seem to have had little to no winter damage. Kiowa had minor dieback but it was to canes that would have been pruned back anyway, so there was no practical loss there. Surprisingly, I had two Kiowa canes that tip rooted (tip layer) which I though erect blackberries didn't do. PrimeArk 45 is sprouting leaves now but I'm not sure how much winter damage it incurred due to the fact that part of the canes had to be pruned anyway due to fruiting on the primocane part of the canes. I did let them grow too long and they didn't produce very many laterals which will impact summer fruiting. Ouachita seems to overwintered with little winter damage after pruning but they are starting to leaf out now which makes me nervous because our frost free date isn't until early May. It looks like all of my raspberries survived the winter fine. One interesting finding is Cascade Delight. It was uncovered and seems to have overwintered OK but is a 'Western' raspberry. It is starting to leaf out now. There might be some winter damage but I'll report back on that. I think you should try out Siskiyou, it seems like a pretty hardy trailing blackberry.