What type of plants are good ground cover for bonsai?
When I first started growing bonsai, I only used a fine gravel for ground cover, but this looked very boring and artificial. Then I tried moss, since it has no roots to compete with the bonsai, but it typically required much more water than the bonsai preferred.
I'm now using various species of Sedum, a small low-growing creeping succulent. It thrives in nearly all types of climates, sun exposure, and watering routines, so I'd have trouble killing it even if I wanted to. My only concern is with how much its root system will compete with the bonsai.
Has anyone had success with other plants?