In the start, the landscaping contractor makes a letter which is a rough design and layout of what could be done with the land in order to achieve the desired outcome. Different pencils are required to make graphics of the picture. Landscaping has become more technological then natural as only few projects begin without bulldozer, lawnmowers and chainsaw. It is estimated that 40 million lawnmowers consume approximately 200 million gallons of gasoline annually. Different areas have different qualities of plants. Fertilizers are required for this purpose in excess amounts as natural landscaping is done. Some landscapers prefer to use Mix gravel with rocks of varying sizes to add interest in large areas.