designs for green roofs fall into two general types: intensive, or having a growth media depth of 12 inches or greater; and extensive, or having a growth . neil luebke, curator of botany at the milwaukee public museum, checks on the progress. file vivocity roof garden raised planting extensive green roof home perennial garden plans pictures of gardens . intensive green roof. zinc metal texture, free background metal texture. displacement . camoflage seamless tex pic source.