Vapor Pressure Deficit
Vapor Pressure Deficit (VPD) is not a terpene, but rather an environmental metric describing the difference between the amount of moisture the air can hold at a given temperature versus the amount it actually contains. In cannabis cultivation, VPD is a critical parameter affecting plant physiology, stomatal function, and transpiration rates. Breeders and growers monitor VPD because it influences how efficiently plants uptake water and nutrients, which can indirectly affect terpene expression and volatile compound accumulation. Maintaining optimal VPD ranges (typically 0.8–1.5 kPa for most growth stages) supports consistent phenotype expression across genetic lines. Understanding VPD is essential for controlled-environment breeding programs seeking reproducible results.
Vapor Pressure Deficit strains
No strains tagged into Vapor Pressure Deficit yet — they'll appear here as breeders submit lineage records under this terpene.
Vapor Pressure Deficit (VPD) is not a terpene, but rather an environmental metric describing the difference between the amount of moisture the air can hold at a given temperature versus the amount it actually contains. In cannabis cultivation, VPD is a critical parameter affecting plant physiology, stomatal function, and transpiration rates. Breeders and growers monitor VPD because it influences how efficiently plants uptake water and nutrients, which can indirectly affect terpene expression and volatile compound accumulation. Maintaining optimal VPD ranges (typically 0.8–1.5 kPa for most growth stages) supports consistent phenotype expression across genetic lines. Understanding VPD is essential for controlled-environment breeding programs seeking reproducible results.
Breeders working in controlled environments use VPD data to standardize growing conditions across seed generations, ensuring that terpene profiles and plant structure remain consistent. Stable VPD conditions help isolate genetic traits from environmental noise, making it easier to select for desired cannabinoid and terpene characteristics.
Educational reference · Cultivar metadata only · No medical claims