when the plant gets bigger there are often several growing areas. each of these will produce their own root systems. then you can separate them and pot them on individually.

Welcome to Goy Snookered! Primulas are easy to split once they have grown for a season or two. I usually do it in mid to late summer myself, I dig them out, separate them (easy as they split naturally), then trim the leaves back by half before planting them in their new spot. Good luck! :) Karen