Design, architecture and engineering professions are directly responsible for the development of our physical environment. Landscape architects make decisions effecting the environment and public health and safety in many aspects of their practices. While planning functional and aesthetically pleasing open spaces, it is important to take into consideration the protection of the environment and natural resources. The aim of this study is to research the negative impacts of landscape architectural practices on the environment and to identify opportunities for conservation via itemising the basic points that should be considered in order to make the impacts positive. Research has shown that landscape designs can have either positive or negative impacts on the environment depending on the way they are designed, implemented and maintained. Unsustainable land development and management practices significantly disturb the elements of ecosystems damaging the soil and vegetation and start a chain of negative effects resulting in reduced infiltration, increase in runoff, excess sedimentation, water pollution, increase in greenhouse gases and energy consumption. Sustainable landscape architectural practices conserve soil and vegetation, materials and energy, promote the sustainable use of water and land, support natural ecosystem functions, and promote human health and well-being.