Soil is a crucial medium for cultivating flowers, serving as the material foundation upon which they thrive. It is the primary source of water, nutrients, air, and heat required for their growth and development. This is because soil is composed of minerals, organic matter, soil moisture, and soil air. Minerals are the fundamental substances that make up soil, providing a variety of essential nutrients for flowers. Organic matter not only supplies the nutrients necessary for the growth of flowers but also plays a vital role in improving the physical and chemical properties of soil, soil granule structure, and functions such as water retention, supply, aeration, and temperature regulation.

Soil moisture is an indispensable material condition for the growth of flowers. Soil air is the source of oxygen needed for the root absorption of flowers and the life activities of microorganisms, as well as an important condition for the further weathering of soil minerals and the conversion and release of nutrients from organic matter. Scientific experiments have proven that suitable soil for plant growth, by volume, contains approximately 38% minerals, 12% organic matter, and soil air and moisture each account for about 15%-35%. Some sources indicate that the water content of general flower plants for growth is about 25% of the soil volume, with air also accounting for 25%. Due to a lack of understanding of these principles, some individuals fail to change the pots or soil for a long time when cultivating potted flowers, leading to the deterioration of soil physical and chemical properties, poor aeration and water permeability, and a lack of nutrients. Consequently, this results in poor growth of flowers, yellowing leaves, reduced blooming, and even failure to bloom. Therefore, to properly care for potted flowers, it is necessary to pay attention to timely pot and soil changes.