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*Urgent* Rapid leaf burn. Straight burn lines in between leaf veins. Week3 of flower
Greenatgrowingstarted grow question a month ago
Had a few grows under my belt but never seen this before.Effects top/mid fan leaves. Burn lines in between leaf veins almost perfect straight lines. I have addressed everything now from nute burn to light burn, cal mag def . I’m lost. Damage is coming on very fast . Inside of 1w
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greenAFanswered grow question a month ago
That's Potassium deficiency, could be from lack of overall K, or the K in your substrate isn't plant available and being locked out.
00110001001001111Oanswered grow question a month ago
leaves are a bit dark/glossy in background... maybe inhibiting K a bit? Maybe, just a bit low on K. It should start lower on the plant, which is why i think it may be lockout or possible a bit too much light at top. Damage starting on serated tips is usually k-related.
if you have already reacted and done some things that didn't work, might have contributed to further progression, too. It's important to eliminate as many possibilities before trying multiple things at one time... just makes it harder to diagnose going forward. It'd difficult to take away and easier to give.
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