Hydrated Lime

Hydrated lime (calcium hydroxide) is a soil amendment and pH buffer used in cannabis cultivation to raise soil alkalinity and improve nutrient availability. In growing environments, it helps neutralize acidic substrates and can influence microbial activity in the rhizosphere. While not a cannabis genetics trait itself, hydrated lime management is relevant to phenotype expression, as soil pH affects nutrient uptake and can modify plant vigor and secondary metabolite production. Breeders and cultivators working with specific cultivars often document soil chemistry requirements, including lime application protocols, as part of strain-specific growing records. Understanding hydrated lime use connects to broader discussions of genotype-by-environment (G×E) interactions in cannabis breeding.

Breeders documenting cultivar performance across different soil chemistries may note how hydrated lime application influences growth rate, leaf color, and cannabinoid/terpene expression. Strain profiles that include soil pH ranges and lime amendment histories help other cultivators replicate phenotypic stability.