I agree. They add so much character. We did this in the front of our house also. They are easy to maintain, we have some evergreen so they look nice in the winter, and there is not cost like there is with annual flowers.
Printable View
We planted hostas in various places in the rock garden and it looks great, and it is so easy to maintane.
Monkey grass, which some people sometimes call spider grass, is a could ground filler and it will grow just about anywhere, not to mention that they spread rapidly and you will not have to worry about having to replant next year.