Blackberry primocanes/floricanes? Help!?

Most blackberry plants will put out new shoots for fruiting next year. Once the cane has fruited, then it will die and be replaced with new sprouts. There is a new variety that fruits on new wood the current year. These are primocanes. If the growth of last year has new leaves on it, then it can possibly make berries, unless the cane has already fruited, in which case, it will turn brown and woody. I have thornless varieties which will make roots at the tip where it contacts the soil. You can grow a new plant from these. However, if they're patented plants you should not do it. It is illegal to propagate patented plants. The green and spiny stems are simply a characteristic of a healthy stem. All shoots that have made berries last year can be removed, except primocanes. They will produce for two years. Good luck.