Ap0_DrXstarted grow question 4y ago
I have this symptom, a pattern of rust spots happening on new leaves, I have checked medium PH, which is around 7.5. I think it is Boron Deficiency caused by The medium PH not being approximately 6.5.
I need more suggestions, What do you guys think?
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Daytrip97answered grow question 4y ago
Honestly just fix the ph first. The problem may sort itself out rather easily. I would not add anything until after the ph is corrected depending on your grow media. The optimal ph for cannabis is 5.5-6.5, the lower end geared towards hydroponics and the higher end towards soil.
AsNoriuanswered grow question 4y ago
You say the answer yourself , but still searching for other answers ....
Stupid.
Right Ph is essential tor plant to uptake all nutritions.
For soil its 6.3-6.4
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