Nitrogen Toxicity

Too much nitrogen causes very dark green, clawed leaves - tips hook downward like eagle talons. Very common in early flower when growers stay on a high-N veg feed instead of switching to a bloom-stage formula with lower N and higher P/K.

What usually causes it

• Overfeeding with a high-nitrogen base nutrient
• Continuing the veg feed into early flowering instead of switching to a bloom formula
• EC of the working solution above the strain or stage tolerance

Related product categories

• Base Nutrients

Terms worth knowing

• EC (Electrical Conductivity)

Walk the questions if you are not sure this is the match. The notes above are the same ones the tool ends on.