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Rust spots
Marley03started grow question 3 years ago
What could be the cause of these rust spots? Only 1 plant is showing this. Same strain. They get same feeding. Ph is ok. 4 weeks into flowering.
Solved
Leaves. Color - Yellow
Leaves. Other
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Organomananswered grow question 3 years ago
Wow, you have a lot of deficiencies, but the spots are calcium related, being a lack thereof.
Also lacking potassium and phosphorous, nitrogen and a dose or three of soluble trace elements wouldn't hurt either.
Try adding a couple of half strength doses of grow nutrients into your feeding regime and upping their feeding with a P/K booster and a cal/mag supplement too.
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