Tropical Landscaping nternational provides a door-to-door soil testing service, including sampling, testing at an approved International laboratory and recommendations for amendments according to the results of the tests. This service is beneficial in a number of ways but primarily to determine a scientifically relevant fertilizer program, reducing wastage, and also to determine the health of a soil on a whole. Soil testing identifies any toxic, or potentially toxic elements in the soil, and also any potentially plant damaging shortcomings in its constitution.