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Light: Difference between revisions
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Cannabis can tolerate an extreme light intensity. Many growers limit light levels early in the plants life but this is not nessesary<ref>Best Grow Lighting for Cannabis with Dr Bruce Bugbee | Far red ePAR - https://youtu.be/VvBTsl_gScw?si=4kS8z9cSu9hprAMu&t=2771</ref>.
Ideal intensity is around 1000 - 2000 μmol/s. 40 DLI is a good target although it is possible to go higher.
Generally the maximum light intensity a plant can tolerate becomes limited by other conditions such as CO2 level or nutrient deficiency. Note that light intensity is proportional to the rate of [[Plant processes#Transpiration|transpiration]], meaning higher light intensity can raise the [[Temperature and Humidity|humidity]] of the environment as more water exits the plant. This creates another potential limitation to the maximum light that can be applied; the grower's ability to control the temperature and humidity.
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