new plantings of perennials in the sloping park with anti-erosion battening. retaining walls cast from concrete in graceful arches

amoeba antierosion arches bark battening bed bench bent brown cast central cobblestone concrete construction control curved erosion evergreen festuca flower footpath garden glauca graceful gray grid handrail hill hosta lawn lush metal mulch mulching new outdoor pachysandra park perennial perennials plank plantation plantings pole public railing retaining rod rods sieboldiana silver slope sloping stainless staircase steel steps stone terminalis terrace timber wall walls wide