would need some kind of edging to keep them in place, but perfect for under gutter outlets on side yard. The smooth gray rocks do a wonderful job of providing good drainage and also add movement against a solid wall by creating flow reminiscent of water.
I have these, but love the mixture with boulders.Blue lithodora - They are low-growing, evergreen shrubs and subshrubs, producing blue or white The Greek lithodora literally means "stone gift", referring to their preferred rocky habitats.
Colorful Planting Partners-Here, the orange blooms of Eriogonum umbellatum stand out against the gray-green foliage and pink blooms of Mojave sage (Salvia pachyphylla). Both plants are drought-tolerant and thrive with little maintenance.