The following content is for academic discussion and understanding of common principles only, and does not constitute specific agricultural or horticultural practice recommendations. The use of any chemical should comply with local laws and regulations, and should be carried out with caution on the premise of fully understanding the product characteristics, safety information and scope of application. If necessary, consult professionals (such as horticultural experts, agricultural technicians or plant physiologists). Some chemicals that have been studied and applied to regulate plant growth rate include: 1. Plant Growth Regulators (PGRs): a. Gibberellins • Gibberellins (such as GA₃) are often used to promote seed germination, extend fruit growth period and improve the growth conditions of certain plants. It has been reported that at certain concentrations and under appropriate application conditions, it can accelerate the growth process of some plants. b. Auxins • Naturally occurring auxins (such as indoleacetic acid IAA) or their synthetic analogs help cell elongation and differentiation, but excessive use may lead to unbalanced growth or other developmental abnormalities. c. Cytokinins • This type of hormone mainly promotes cell division and delays aging, and the ratio of balance to auxins may affect the overall growth rate of the plant. 2. Nutrient solution and specific fertilizers: Sometimes the growth rate of plants can be indirectly affected by adjusting the ratio of nitrogen, phosphorus, potassium and trace elements in fertilizers. However, this type of method is not the effect of a single "chemical", but an overall adjustment of the growth environment. It should be noted that: • Each plant has different sensitivity to hormone or fertilizer products, and the optimal concentration and method of use need to be determined through experiments. • Improper use may lead to abnormal morphology, premature aging or quality decline of plants; it may also have adverse effects on the environment. • "Significant acceleration in a short period of time" may easily cause interference with the normal physiology of plants, which may not necessarily be beneficial to plant health in the long run. In summary, gibberellin hormones (such as GA₃) are more common in growth promotion research, but their application must be strictly in accordance with product instructions and professional advice. It is recommended to conduct small-scale tests on your plant species before trying any chemical regulation method, and pay attention to the latest agricultural and horticultural scientific research results. If conditions permit, consider consulting local agricultural extension departments or horticultural research institutions to obtain more practical suggestions.