organicsand

Organicsand refers to a class of growing media and soil amendments that blends organic matter with mineral sand. The aim is to combine the nutrient-retaining capacity of organic materials with the drainage, stability, and structure provided by sand, creating a media suitable for a range of horticultural uses.

Composition and properties: The organic component may include compost, aged bark, peat, or other biodegradable materials, while the mineral component is typically washed silica or quartz sand. The exact blend varies by producer and application, producing a product that can improve aeration, drainage, and microbial activity relative to pure sand or heavy soils. pH and nutrient availability depend on the organic fraction and any additives, such as slow-release fertilizers or trace minerals.

Manufacture and use: Organicsand is produced by blending and processing organic matter with washed sand, sometimes followed by conditioning or sterilization. It is used in nurseries, landscape planting, seed starting, and as a component in potting mixes or soil blends to improve structure in sandy or compacted soils, as well as in controlled environments such as greenhouses.

Advantages and considerations: Benefits include improved drainage, aeration, and root-zone microbial habitat, along with reduced compaction and better root growth. Limitations include batch-to-batch variability, potential nutrient leaching if not managed, and cost relative to conventional media. Users should test pH and nutrient levels and tailor irrigation and fertilizer programs accordingly.