Fact Checked by Doctor NameWhat is Parts Per Million (PPM)?
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In liquid solutions, parts per million (ppm) measures concentration.
In cannabis cultivation, ppm specifically measures the concentration of dissolved minerals and nutrients within the water given to plants.
Monitoring ppm levels in cannabis irrigation water helps growers ensure plants are receiving optimal levels of nutrients without any buildup of excess minerals that could damage the plants.
Ideal PPM Levels
Ideal ppm levels will vary depending on the growth stage of the cannabis plants.
Seedlings and young vegetative plants will thrive best with lower nutrient levels around 200-500 ppm.
As plants mature and begin to flower, they require higher ppm levels, usually in the range of 800-1500 ppm.
Growers must continually monitor and adjust ppm to suit each stage of plant growth for maximum health and production.
Dialing in proper ppm complements the plant’s natural growth cycles.
