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50 Shades of Green
VPD
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Plants Don’t Care About Humidity. They Care About VPD.
Why chasing humidity without accounting for temperature is solving half the problem
You got your humidity to 60% and your plants still look terrible. Here’s why: humidity without temperature is half the story. The number your plants actually respond to is vapour pressure deficit, and until you understand it, you’re fixing a symptom while missing the cause.
Houseplant Care Basics
How Light, Grow Mix Porosity, Temperature, Humidity, and Nutrients Work Together
Learn indoor plant care basics with a clear framework: light levels (PPFD), potting mix porosity, temperature, humidity, and nutrients. Understand why survival starts under 75 µmol/m²/s, how roots need oxygen, and how mismatches cause stalling, yellowing, and stress long before symptoms appear.
Indoor Plant Misting Myths
Why Your Spray Bottle Isn’t Saving Your Plants
Misting is one of the most common houseplant tips, but it doesn’t solve low humidity. In this guide, we explore why misting fails, the role of transpiration in plant health, and what methods actually work for supporting humidity-sensitive plants indoors.
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    • PAR Map Generator
    • Energy UseGrow Light Run Costs
    • DLI CalculatorFor Grow Light Calculations
    • DLI CalculatorFor Sunlight & Windows
    • Vapour Pressure Deficit (VPD)Temperature & Humidity
    • Plant Doctor
    • Plant Hoarder Agreement
    • The Plant OracleMy Magic 8 Ball
    • Vegetable CalendarSeeds & Transplants
    • Plant Spacing CalculatorFor Garden Beds
  • $ Codes
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