Drought obviously doesn't help, but truncheons have more reserve energy than a small cutting. My neighbor had good bottom land soil and had 50% success with Mulberry truncheons during drought. At Doctorbrady's we planted in dry soil, and that was followed by drought, so his Mulberry died. In lower ground Doctorbrady's HP was a 100% success!
I prefer fresh, and don't see hardening off as a factor. In drought, "Hardening off" = loss of moisture. I can't think of a single plant that needs to lose moisture to grow???