In one of my rock gardens I have planted irises (you can see their buds at the very top of the photo),and garden mums that bloom in the fall. But also some purple salvia which is so hardy and long-blooming and then my creeping thyme is starting to put on its tiny little flowers. I hope to plant more of this in other places, it's a wonderful ground cover. Along the right side is a young aspen tree . . . and a pitchfork! I love my rock gardens!