@Deb1Ash2, Green Mound Juniper (Juniperus procumbens) is a tree species like the other Juniperus ssp. Green Mound just has a prostate habit. Fortunately, because of that prostate habit, they tend to spread and can be propagated vegetatively. However, you should continue to think of it as a tree and don't attempt plant division unless you're certain each intended division has a substantial mass of roots. This can happen naturally through a process known as layering wherein the lowermost shoots develop roots where they touch the ground. Initially, you should look for those in each of your intended divisions. If you don't find any, or if they are only sparse, you can encourage adventitious root development by planned layering or with cuttings. But I should warn you, Juniperus ssp. can be slow to root (up to 2 years). Some cultivars root much more readily that others, so it's worth a try and now is a great time of year to start with both layering and semi-hardwood cuttings. Do you have the time for the challenge?
