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Does anyone have an idea what is happening to this...
Scribsanswered grow question 5 years ago
Yellow between the veins / veins stay green / at the base of the plant = nitrogen (N) or magnesium (Mg) deficiency
The large dark areas + the random yellow dots worry me more. Could spider mites.
-> Check for small brown-ish dots under the leaves, like @LaBOSSANOVA said. Under magnifying glass, you should see microspiders. I recently had an invasion over my basil with similar symptoms. Neem oil killed my basil in a few days by the way.
One of your pictures shows a leaf with a much larger dark spot: brown necrotic tissue. Have you under-watered by any chance?
Upper level, some of the the veins are affected also, as it shows with some scorched tissue - could be a mild calcium deficiency.
DonaldTrumpanswered grow question 5 years ago
Looks like it could be leaf septoria. You could mix up some Neem oil dash of dish soap and water mist the leaves under side and top.2 remove leaves get better air circulation and let the pots dry out. Feed plants in the morning. I would also lower humidity to 45%.😎
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CRiSPrGrowanswered grow question 5 years ago
hey there i think it's actually pests on this one , and i'm so sorry to say this... You want to check under your leafs for microscopic black dots, if that's what you see it's mites. Only thing that works is adding live ladybugs to your grow room , or using beneficials (but that takes longer) , short of live ladybugs and bacilus , there are other remedies that i dont find work very well at all like using neem oil or foggers . Hope this helps ! 🚀
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Chayton_elegantbuds420answered grow question 5 years ago
I think it’s indeed a short on calcium or magnesium. You did good giving her Calmag.
Maybe that’s the reason the upper leafs are changing too.
Give her som time
Good luck
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