VPD Chart

Temperature :

VPD = 1.58 kPa

Temperature :

Air RH: 50 %

Air Temp: 77.0 °F

Leaf Temp: 77.0 °F

  • Leaf Temp under Dew Point Danger Zone (Plant Disease)
  • VPD under 0.4 Danger Zone (Under Transpiration)
  • VPD from 0.4 to 0.8 kPa Early Vegetative Growth / Propagation (Low Transpiration)
  • VPD from 0.8 to 1.2 kPa Late Vegetative / Early Flower (Healthy Transpiration)
  • VPD from 1.2 to 1.6 kPa Mid / Late Flower (High Transpiration)
  • VPD over 1.6 Danger Zone (Over Transpiration)
  • Leaf Temp under Dew Point Danger Zone (Plant Disease)
  • VPD under 0.4 Danger Zone (Under Transpiration)
  • VPD from 0.4 to 0.8 kPa Early Vegetative Growth / Propagation (Low Transpiration)
  • VPD from 0.8 to 1.2 kPa Late Vegetative / Early Flower (Healthy Transpiration)
  • VPD from 1.2 to 1.6 kPa Mid / Late Flower (High Transpiration)
  • VPD over 1.6 Danger Zone (Over Transpiration)