Plant Growth Regulators (PGRs) are an important and versatile tool in the management of a wide range of horticultural crops. Plant growth regulators can be used to control growth rates, promote flowering, increase branching or thinning, delay the maturation of the fruit, and improve quality and yield. Plant growth regulators have been studied extensively to better understand their effect on plant development and physiology. Plant growth regulators have become an integral part of modern agriculture, playing an important role in crop production efficiency as well as providing a means for sustainable crop production. Plant growth regulators can help reduce labor input by increasing the speed at which plants reach maturity, promoting uniformity across plants within a species, and reducing losses due to pest damage or disease.