“What do I do about pruning raspberries?”
Well, you really screwed the pooch planting everbearing and spring bearing berries together, LOL!
The easiest way to figure this out is to just lop them all down in the fall when they are done, or be lazy like me and lop them down in the early spring.
Your spring bearing canes will produce fruit first, the everbearing canes will produce a later, heavier crop.
So, if you want to make all your juices and jams at one time in the fall, I’d pick the earlier berries, freeze them whole on a cookie sheet, then pop them into a ziplock when frozen. You can add those to the later berries you pick and go from there.
Or, you can just eat them all as they come and enjoy a long crop of berries. :)
I have “Heritage” berries which are everbearing. I lop them all down in the spring and get one big fall crop from late August through October some years. I prefer the late crop because those little ‘Picnic Bugs’ aren’t around to bother the fruit, and the wasps and bees aren’t as aggressive in the fall as they are in the spring & summer. (If I miss a few berries, the bees & wasps hone in on them which makes picking and adventure!)
Lack of room.
I can see that the bushes are different. The ones that bore fruit last fall look dead, the other ones have redder looking, smooth bark and are putting out leaves right now.
My blackberries look pretty shot, too, except for one. I wonder if the winter was too hard on them. I was really hoping for more from them by now.
The one berry bush that's going to town and looks like it will be trouble to control is a yellow one a friend gave me from her garden.
I have Heritage raspberries as well. The other is Latham, I think.