Abstract: Methods are provided for enhancing the health, growth and/or sturdiness of turf grasses by applying a combination of microbes and/or their growth by-products to the turf grass roots and/or to soil. Specifically, in one embodiment, the subject invention utilizes Trichoderma harzianum and a strain of Bacillus amyloliquefaciens. The methods can further be used to improve maintenance and upkeep of natural turf grass fields used in, for example, athletics and recreation, as well as to increase the functionality and safety of these natural turf grass fields.