Vapor Pressure Deficit
Vapor Pressure Deficit (VPD) is not an aroma itself, but rather an environmental parameter that directly influences volatile compound production in cannabis plants. VPD measures the difference between the amount of moisture the air can hold versus the amount it actually contains, typically expressed in kilopascals (kPa). Breeders and cultivators monitor VPD because it affects transpiration rates, nutrient uptake, and secondary metabolite synthesis—including terpene and cannabinoid profiles. Plants grown under different VPD ranges often express different aromatic signatures, making VPD a significant variable in phenotype stability and breeding work.
Vapor Pressure Deficit strains
No strains tagged into Vapor Pressure Deficit yet — they'll appear here as breeders submit lineage records under this aroma.
Vapor Pressure Deficit (VPD) is not an aroma itself, but rather an environmental parameter that directly influences volatile compound production in cannabis plants. VPD measures the difference between the amount of moisture the air can hold versus the amount it actually contains, typically expressed in kilopascals (kPa). Breeders and cultivators monitor VPD because it affects transpiration rates, nutrient uptake, and secondary metabolite synthesis—including terpene and cannabinoid profiles. Plants grown under different VPD ranges often express different aromatic signatures, making VPD a significant variable in phenotype stability and breeding work.
Breeders track VPD conditions during phenotype hunting and stabilization to ensure consistent terpene expression across generations. Controlled VPD environments help isolate whether aromatic variation stems from genetics or cultivation stress, strengthening lineage documentation.
Educational reference · Cultivar metadata only · No medical claims