We have lemon thyme as well as your standard garden variety (hah!) thyme. They split readily to make new clonal cuttings, and I've rarely had one fail regardless of the timing of the division. We dry it for use in teas or for cooking, and it makes a good ground cover partner for plants like strawberries. The small flowers help to support solitary bees as well as parasitoid wasps, which help to regulate the insect pressure on the thyme's plant neighbors.