Plants, which are sessile life forms, are frequently subjected to a variety of abiotic and biotic stressors. Drought, heat, cold, and salinity are examples of abiotic stress conditions, whereas bacteria, fungi, viruses, nematodes, and insects are the principal sources of biotic stress. Plants have developed sophisticated systems that assist them in recognizing the stress signal and permit the best possible growth response to adapt to such unfavorable conditions. Phytohormones are essential for the plant’s ability to adapt to challenging environmental circumstances. The complex signaling networks and the sophisticated interaction between the various hormone-signaling pathways have been clarified by recent study discoveries. With a particular emphasis on the relevance of crosstalk between various hormones in producing a complex and effective stress response, we summarize the roles of the key plant hormones in regulating abiotic and biotic stress responses in this study. The explanation of seed dormancy and germination serves to show the delicate balance that may be imposed by the phytohormones in controlling plant responses to environmental cues.