Peat Based Media

Peat-based growing media consists of decomposed sphagnum moss and other organic materials, historically one of the most common substrates in cannabis cultivation. These media retain moisture effectively while maintaining porosity, making them suitable for various growing methods from seedlings to mature plants. Peat's acidic pH (typically 3.5–4.5) requires amendment with lime or other buffering agents to reach cannabis-optimal ranges. Environmental considerations around peat harvesting have driven increased interest in alternative media like coco coir and composted bark, though peat remains widely used in professional and hobbyist settings. Proper aeration and drainage management are critical, as peat's water-holding capacity can lead to compaction and root issues if not carefully monitored.

Breeders and researchers working on phenotype expression and nutrient uptake often conduct trials in peat-based systems to standardize growing conditions across genetic lines. Consistent media composition helps isolate genetic traits from environmental variables, supporting reliable lineage documentation and strain stability assessments.