Category: Landscape Architecture Lessons from a Landscape Architect: To Substitute or not to Substitute TASA ID: 334 Some rules still exist on the books of municipalities governing the selection of plant materials for new and redeveloped site projects. Lists of genus and species authorized for installation attempt to reflect the desired site conditions, safety considerations and of course aesthetic demands. These lists do not always factor in the complementary role of plants in defining spaces and enhancing the design attributes of an architectural statement. Read more