Answer: There are a number of ground covering plants that are both drought resistant and can also take some foot traffic. Not quite as much foot traffic as turfgrass, but you can still walk on them. Dymondia margaretae is a native of South Africa. This silvery plant grows in a bed of tightly woven roots and leaves, similar to lawn except glittery. In the summer, it produces yellow flowers. A bed of Dymondia is a strong and beautiful thing to behold. Creeping Oregano (creeping thyme), gazanias and Osteospermum are also good choices. All are trailing plants and all flower during the spring or summer season.
Hope one of these suggestions is just right for your landscape.
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