3-Indolebutyric acid is widely used in agriculture and horticulture as a plant growth regulator. It promotes root development in cuttings, making it essential for the propagation of plants. Gardeners and farmers apply it to stimulate root formation in difficult-to-root species, enhancing the success rate of plant cloning and transplantation. It is also used in tissue culture to induce cell division and root initiation in plant cells. Additionally, it aids in improving the survival rate of seedlings and young plants by encouraging robust root systems, which are crucial for nutrient uptake and overall plant health. Its application is particularly valuable in the cultivation of ornamental plants, fruit trees, and crops, ensuring higher yields and healthier plants.