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Deficiency
Hazeterpzstarted grow question 2 years ago
Guys please can someone tell me if this is only a nitrogen deficiency or also something else ? It’s starts from under the plant, leaves start to yellow from the tip of the leaves.
Does it do any harm if I add a little calcium & magnesium along with the nitrogen in vegetative stag
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Leaves. Color - Yellow
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Itsgnomegrownanswered grow question 2 years ago
That is a calcium deficiency. If it was a nitrogen issue the whole entire life would be yellow With no rust on it. If you look at your three-pointed leaf in the middle you can see the tips discoloring with a little rust. You are far enough in your veg cycle To cut all them off with a lollipop technique and a good good flush. Start giving some Cal mag plus at 2.5 mL for every 5 gallons need to fix itself out
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Organomananswered grow question 2 years ago
Lower, older leaves dying is pretty normal, but a touch more potassium won't hurt.
Adding cal/mag now in veg is just fine.
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HerbalEduanswered grow question 2 years ago
Looks more like a potassium deficiency i would say
https://loudclouds.co/wp-content/uploads/2016/07/marijuana-deficiency-chart-jorge-cervantes.jpg
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