I researched them quite a bit a few years ago when I first planted them, but of course forgot most of it (getting old I guess).
I seem to remember that having 2 different varieties next to each other can result in the best production. I distinctly remember buying several different kinds, including some black raspberries (thought I'd try it). Never got any black ones, only red. Hmmmm...
Also seem to remember that they only produce on new growth, so on established plants, at the end of the year, you should cut down to the ground most of the branches that just produced. That's all I got right now...
