Serpentine Layering is one of the two ways I propagate my blackberry and raspberry plants. Trailing varieties work best as they are easier to layer in this manner. I take a cane that easily bends down to a pot and I lay it across and bury the center of the cane. As it grows, usually about another week or 2 then I bring it over to another pot and repeat the process. The most I’ve gotten is 7 new plants from a single serpentine layered cane!