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This chapter examines advances in plant growth regulation in turfgrass. It begins by providing an overview of the current use of growth regulators in both cool-season and warm-season turfgrass species. It then goes on to discuss enhancing rooting and establishment as well as turfgrass wear tolerance. A section on seed head suppression and production is also included, which is then followed by an overview of the suppression and control of annual bluegrass. Enhancing disease tolerance and tolerance to environmental extremes such as cold and drought are also discussed. Shade tolerance enhancement is also reviewed and a case study on how turfgrass species and light quality can determine the effectiveness of using plant growth regulators for shaded turf is also included.