Spreading groundcover type perennial plants are great to fill in cracks and spaces in paving. Plants like spreading sedum and creeping thyme are favorites because they can handle some foot traffic and neglect.
You can purchase any of the plants at a good nursery, but 2 companies have made it even easier by choosing some of the best and marketing them under the names STEPABLES® and Jeepers CreepersTM. Their labels are full of information. For instance, Under A Foot Plant Company (the STEPABLES parent company) has researched and copyrighted their foot traffic designations, which tell you how much walking on their plants can handle.
Use Creeping Plants:Between Pavers
The obvious use for creeping perennials is as a filler between pavers, bricks and stone.
Many of the Creepers can actually be used in place of turf grass or mixed in with the other grasses in your lawn.
Spreaders can also be used as a living mulch in established flower beds.