It's early April here in CT and my cascade is coming up. But... holy crap there are a lot of vines! Should I stick to one or two? Just based on how big they are compared to the others?
I've had great success with 6 - 8 bines per crown. It depends on soil type, fertilization, and sunlight. I don't use commercial fertilizers, just plenty of cow & chicken poo in addition to my gardens compost. My one nugget crown yielded just over 4 lbs dry last year with 6 bines. Only real issues I had last year were Japanese beetles