succulents as edging
landscaping ideas backyard
Oregon garden path
Retaining walls specifically designed to recreate the look of stacked rock walls
moss covered stairs
corten stairs and retaining wall. Here's an example of corten used with grass and rock. I think it works well together. And the character of the house is traditional.
What a getaway http://www.veranda.com/outdoor-garden/english-garden-design-connecticut