Could overfeeding veg-formula nutes be causing nitrogen toxicity?

Still using veg nutes into flower. High-N bottle at full dose. Fix: Flush with 3x pot volume Switch to bloom nutes (low N, higher P/K) at week 3-4 of flower

Nutrient IssuesSerious

Nitrogen Toxicity in Cannabis

Too much nitrogen — easy to do during veg — causes dark green clawing leaves, burn, and delayed flowering.

What it looks like

●Very dark green, almost black leaves
●Tips clawed downward
●Burn at leaf tips
●Delayed flower onset

Quick diagnostic checks

1Stop all feeding for a week, then half-strength bloom

2Dark green + clawing = N toxicity, not healthy color

Causes ranked by likelihood

1. Overfeeding veg-formula nutes

Most common

Signs

●Still using veg nutes into flower
●High-N bottle at full dose

Fix

✓Flush with 3x pot volume
✓Switch to bloom nutes (low N, higher P/K) at week 3-4 of flower

⚠️When to worry

N toxicity in flower delays harvest and reduces quality. Fix promptly.

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