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What is this please !!!!!
Homestickycannabisstarted grow question 4 years ago
I have red spots,looks like rust ! appearing on mostly older leaves. Soil grow , pH 5.8-6.3. Flushed last night with 3 gallons ph'd wtr. Was using 3ml calmag 3ml tiger bloom per gallon . This is a auto flower as well.
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Leaves. Other
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The8thChevronanswered grow question 4 years ago
It's a calmag issue. It's a lockout caused by to much P and K. It's been happening to mine too, but the spread is so slow, I'm not concerned. I did cut the P and K back by 25% and the spread is barely noticeable now.
DoDrugs420answered grow question 4 years ago
Im guessing she is locking out any nutrient more specifically manganese, due to high salt concentration, too much cal mag = other minerals get left out
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