I just planted a couple of flats of Pachysandra in a shady area. Some of the plants have one stem pointing upward with some green leaves at the base. My instincts are telling me I should pinch off that top stem to encourage bushy growth. Would someone confirm that's a good idea? I'm also thinking that if I pinch off that stem, I could just stick it into the soil and it would probably put out roots and create a new plant. Has anyone had experience/luck with that? Any suggestions would be appreciated.