Led Vs Hps Phenotypics

Light spectrum and intensity from different cultivation technologies can influence cannabinoid and terpene expression in cannabis plants, leading to observable phenotypic variation between LED and HPS-grown specimens of identical genetics. HPS (high-pressure sodium) systems, which emit a broader, warmer spectrum, have been used in cannabis breeding for decades and may produce different secondary metabolite profiles compared to newer LED technologies with tunable, narrow-band spectra. These environmental differences can affect terpene volatility, cannabinoid ratios, and plant structure — not through genetic changes, but through phenotypic plasticity. Breeders and cultivators document these variations to understand how lighting infrastructure influences expression of a strain's genetic potential. This distinction matters for consistency in seed selection and for understanding whether obser

Breeders use controlled lighting comparisons to identify which genetics maintain stable phenotypic expression across different production systems, and which show significant drift under LED versus HPS conditions. This data informs breeding decisions about environmental resilience and helps distinguish true genetic markers from light-induced variations.