A soil conditioner is any material added to soil to improve its physical properties, primarily its structure and texture. Unlike fertilizers, which directly provide nutrients to plants, conditioners work to create a better environment for root growth by enhancing water retention, drainage, aeration, and nutrient-holding capacity. Common types include organic matter (compost, manure), minerals (gypsum, lime), and synthetic polymers. By improving soil tilth, conditioners help plants access water and nutrients more efficiently, reduce erosion, and support a healthy soil microbiome. They are fundamental to sustainable agriculture, soil reclamation, and successful gardening in challenging soils.

Soil conditioners are substances added to soil to improve its physical properties and fertility. They are used to enhance soil structure, water retention, aeration, nutrient availability, and overall soil health. Soil amendments can be organic or inorganic materials that interact with soil particles to create a better environment for plant growth. These materials can be incorporated into the soil before planting or used as a top dressing for existing plants. Soil amendments are essential for maintaining soil health and productivity, especially in agriculture and gardening.