Macronutrient Ratios

Macronutrient ratios refer to the balanced proportions of nitrogen (N), phosphorus (P), and potassium (K)—commonly abbreviated as NPK—that cannabis plants require during different growth stages. While macronutrient ratios are not an aroma descriptor per se, they directly influence secondary metabolite production, including terpene and cannabinoid synthesis, which collectively shape a plant's final aromatic profile. Vegetative growth typically demands higher nitrogen for leaf and stem development, while flowering stages favor elevated phosphorus and potassium to support resin gland maturation. Breeders and cultivators working to express specific aromatic chemotypes often adjust feeding schedules to match strain-specific nutrient demands, recognizing that deficiencies or excesses can mute or distort terpene expression. Understanding how nutrient timing and ratios interact with genetics rem

Breeders developing aromatic cultivars study how NPK ratios affect terpene volatility and preservation during flowering. Lineage records from breeding programs frequently note that proper nutrient management during late flower is essential for stabilizing the aromatic phenotypes selected across generations.