Q.Out of control Rosemary
My husband and I just bought a new home and the previous owner had a very large Rosemary bush. It seemed to take over the whole corner of the garden. We want to cut it back (drastically) but are afraid we might kill it if we cut it back too far. How far is too far? Would you recommend this, or should we take a branch and plant it and remove the older bush completely?

Cut! Cut, cut, cut. This article will tell you how: https://www.gardeningknowhow.com/edible/herbs/rosemary/pruning-rosemary.htm