Rosemary cuttings

Today I took some cuttings in the hope I can grow some fresh rosemary plants to replace the current bush. I'm not sure exactly how big the cuttings should be, and if you do anything other than cut a bit off, stick it in water and wait, but time will tell if this approach works.

The current rosemary bush is approx 3 feet high and 6 feet across so takes up just a bit more of the garden than is strictly necessary. It's quite woody if you try and trim it back and seems to be dying off in a few sections, hence the need to grow some replacements.