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brown calyx?

Dodgers
Dodgersstarted grow question 4 years ago
top calyx and hair are turning brown, dark brown, not like the plant is maturing... specially on the main top also the new leaves have burn tips. over fertilized and/or light burn? i have used little fertilizer and always kept the light above the recommended distance THANKS!
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Week 6
Buds. Other
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Shagrath
Shagrathanswered grow question 4 years ago
Good morning! Some plants have this kind of traits in genetics and they turn to really nice purple colors in the end but to me that looks straight up molybdenum deficiency. Have you checked the pH of your runoff water? I've read that it is most likely caused by too low pH of the root zone. Here's some more information: For cannabis plants, molybdenum tends gets locked out at lower pH ranges. Your cannabis plant may show signs of a molybdenum deficiency if the pH at the roots is too low, although it is likely that molybdenum is there. That is because when the pH of your root zone is off, your cannabis cannot properly absorb molybdenum through its roots. Therefore the first step is to ensure that you have the correct pH for your growth medium After a molyndenum deficiency is cleared up, the problem (pink coloring and yellowing leaves) will stop appearing on other parts of the plant, usually within a week. Please note that leaves which have been damaged by a molybdenum deficiency will probably not recover or turn green, so you want to pay attention to other growth for signs of recovery. In soil, molybdenum is best absorbed by the roots in the 6.0 – 7.0 pH range (some growers recommend avoiding a soil pH of lower than 6.5 if you suspect a molybdenum deficiency) Hope this helps! 👌
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