The term refers to methods employed to sanitize compressed growing media used for starting seeds. These small, often peat-based or coir-based discs expand when hydrated, providing a convenient environment for germination. Maintaining their cleanliness is vital for successful seed propagation.
Sanitization minimizes the risk of fungal and bacterial diseases that can devastate young seedlings. The practice contributes to higher germination rates and healthier, more robust plants. Historically, similar sterilization methods have been used in agriculture to control soilborne pathogens and improve crop yields.
