A measurement that quantifies the amount of photosynthetically active light (within the 400-700 nanometer range) that reaches a specific area of a plant’s canopy per second. It is measured in micromoles per square meter per second (µmol/m²/s) and represents the density of light photons available to plants for photosynthesis. In cannabis cultivation, optimizing PPFD ensures that plants receive the right amount of light for healthy growth and maximum yields.
🔊 foh·toh·sin·THET·ik FOH·ton fluks DEN·sih·tee
In the Wild — Example
The Photosynthetic Photon Flux Density at canopy level was 900 which is right in the sweet spot for flowering cannabis.
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