Temperature is one of the most important environmental factors influencing the growth and development of horticultural plants. It regulates various physiological, biochemical and metabolic activities within the plant system. Each horticultural crop has a specific range of temperature known as the optimum temperature range, within which it grows and develops efficiently. When the temperature deviates from this range, either below the minimum or above the maximum limit, growth and productivity are adversely affected. Temperature directly influences seed germination. Each seed requires a certain minimum temperature to initiate enzymatic activities necessary for germination. Low temperatures delay or inhibit germination by slowing down enzyme activity and metabolic processes. On the other hand, excessively high temperatures may damage the embryo or cause rapid drying of the seed, leading to poor germination. Therefore, proper temperature conditions ensure uniform and healthy seedling emergence. Vegetative growth of horticultural plants, including cell division, cell elongation, and tissue differentiation, is greatly affected