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Yellow and brown leaves
2x2UkGrow420started grow question 4 years ago
Hi, plants have got yellow with brown spots on old leaves at the bottom of the plant, researched and think it may be cal/mag deficiency but not sure, any help advice much appreciated.
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Shagrathanswered grow question 4 years ago
Hi there!
To me that yellowing looks like the plant is just cannibalizing those leaves 'cos she dont need em anymore. The reason I feel like this is that only those few leaves seems to be affected and everything else is looking healthy. I think that if it was bigger deficiency you should see symptoms on more leaves than those few.
Maybe keep an close eye on her and see if this spreads before giving something more?
DixonCideranswered grow question 4 years ago
Hmm. Shagrath may be right on this one. However, Magnesium deficiency will present itself in the older growth first. I see that you are using a 3 part fertilizer now, I do like to add cal-mag into the mix for my girls.
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