Gravel around the foundation for drainage, plant shrubs along to help soak up water. Like the idea of the large rock to prevent erosion from the water spicket. Maybe a few cool pots or barrels with plants too? I like :) side yard idea!
I love colorful foliage plants. They also are perennials and would come up here after year. I think this is a beautiful idea to plant these hosta type plants under a tree with all their different colors