When you choose a professional landscaping contractor, they would do a perfect job at your site and preserve the environment at the same time. Here are a few things that would set apart a professional landscaping contractor from the rest. A truly professional landscape contractor would work with natural processes as much as possible in order to reduce the usage of toxic chemicals, protect the environment and prevent pollution of ground water resources. This will also reduce the cost of purchase of chemicals and prevent the inhabitants of the property from coming in contact with potentially lethal substances.