Nitrogen Deficiency and Toxicity in Cannabis

Nitrogen Deficiency What to Look For…

-Yellowing of leaves starting at the older (lower) leaves
-Lack of robust growth
-“Thin” appearance
-Poor overall green color
-Slow growth

Nitrogen Toxicity What to Look For…
-Excessive growth-Dark green color to leaves
-Brittle stems

Link to Lecture Slides:

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