Relative Humidity Rh
Relative Humidity (RH) is the amount of moisture in air expressed as a percentage of the maximum amount that air can hold at a given temperature. In cannabis cultivation, RH monitoring is critical throughout the plant lifecycle, as it directly influences transpiration rates, nutrient uptake, and susceptibility to mold or mildew. Seedlings and clones typically thrive in higher RH (65–75%), while flowering plants often perform better at moderate levels (40–60%) to reduce disease pressure. Documentation of environmental RH in breeding records helps breeders correlate phenotypic expression with grow conditions and select for resilience in specific climates.
Relative Humidity Rh strains
No strains tagged into Relative Humidity Rh yet — they'll appear here as breeders submit lineage records under this classification.
Relative Humidity (RH) is the amount of moisture in air expressed as a percentage of the maximum amount that air can hold at a given temperature. In cannabis cultivation, RH monitoring is critical throughout the plant lifecycle, as it directly influences transpiration rates, nutrient uptake, and susceptibility to mold or mildew. Seedlings and clones typically thrive in higher RH (65–75%), while flowering plants often perform better at moderate levels (40–60%) to reduce disease pressure. Documentation of environmental RH in breeding records helps breeders correlate phenotypic expression with grow conditions and select for resilience in specific climates.
Breeders track RH conditions during seed development and flowering to identify which genetics show stability across humidity ranges. Strains selected or stabilized under consistent RH profiles may express different vigor or resin production when grown in different humidity environments, making environmental notation essential for reproducible breeding work.
Educational reference · Cultivar metadata only · No medical claims