Aguja reptans 'Bronze Beauty' is a tenacious spreading groundcover, perfect for filling in bare spots in the shady sections of your gardens or hillsides. If you don't want your Ajuga to spread into your lawn, you'll want to maintain your plants once they are well established. Pull and discard any plants and any roots that have spread further than you want them to. Do not compost them or leave parts of the root in the ground, since they will reroot and send out long runners to spread all over again, albeit slowly.