Mail-in testing is temporarily down while we expand and relocate the lab.

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      • Chain of Custody Form
      • Sample Preperation
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      • Cannabinoid Profiling
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      • Plant Sap Analysis
    • Psychedelics Research
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      • VPD
      • Edibles Calculator
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The Devil's Lettuce

Signed in as:

filler@godaddy.com

  • Home
  • Get Started
    • Chain of Custody Form
    • Sample Preperation
    • Drop Off Locations
  • Pricing and Availability
  • Our Testing Services
    • Cannabinoid Profiling
    • Soil Testing
    • Plant Sap Analysis
  • Psychedelics Research
  • Store
  • Verified Craft Producers
  • Blogs and Resources
    • Cannabinoids
    • VPD
    • Edibles Calculator
    • Terpenes
    • Blog
  • Subscribe Now!
  • Other Services
    • Rosin Pressing
  • Contact
  • Lab results
  • Merchandise
  • Get Started here
  • Get Started

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VPD (vapor pressure diiferential)

 

Vapor Pressure Deficit (VPD) in cannabis cultivation refers to the difference between the amount of moisture in the air and the amount the air can potentially hold when saturated. It's a crucial metric for growers as it influences the plant's transpiration rates, impacting nutrient uptake and overall plant health. By optimizing VPD, growers can create the ideal environment for cannabis plants to thrive, balancing factors like temperature and humidity to prevent issues such as mold, mildew, and plant stress.

VPD Calculator

VPD Reference Chart

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 We're currently making upgrades and securing a new space to build a bigger, better testing lab. Mail-in services are paused during this transition. Thanks for your patience and we’ll be back soon, better than before 

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