Slope surfaces of land can be eroded by rain and wind. It is necessary to vegetate a bared slope surface of land for the purpose of erosion control and environmental conservation. The present invention provides a vegetation base soil composition and a method of growing vegetation on a sloped surface for erosion control and vegetating on cut rock slope surface, such as weathered rock surface and barren soil surface. The vegetation base soil includes peat, bio-solids formed by the treatment of urban sewage, for example water treatment plant sediment, woodchip, bark, animal waste compost and clay or loam. The vegetation base soil with a microbes active material, a root activation fertilizer, an adhesive material and seeds are applied over a mesh that is secured over the sloped surface. Plants are grown in the layer of vegetation base soil.