Groundcover advice - hot, sunny spot
I need help with groundcover between stepping stones on the hot, dry south side of my house. I planted red creeping thyme along/between the stones 4 years ago and it's gorgeous, except in the spots where my 100-lb dog likes to lie down. He's in the house all day so it's not like he's lying on it all day, but so far the thyme has not made it in those spots, even with a couple of replantings. After adding mulch for a few years the ground alongside and between the stones is level with the top of the stones. The soil between the stones is like concrete (clay-based soil). I've been thinking about digging out the areas between the stones and trying some kind of ground cover that is thicker (like moss) than the thyme, which basically grows on top of the ground. Something with roots that are not so close to ground level...if that makes sense. A moss would look great, but I doubt it would survive this area. There is a bit of shade from a columnar cherry tree, but it's basically hot and sunny.