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Burned upper leaf edges

Cannapprenticestarted grow question 6y ago

Hi! Dark spots appeared on some upper leaves overnight. I don't think this is the cause, but I did a pretty heavy defoliation the day before. the spots only affects leaf margins and makes the tips curl up. The spots are brown, burned and slightly purplish. what could this be?

Cannapprentice

Cannapprentice

Cannapprentice

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Leaves. Color · Dark-brown

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blendmedmedmananswered grow question 6y ago

your ph is off. to fix you need to do a flush flush until your run off is at a 6.0 let the pot dry out for a few days. mix your first feed of nutrients at half of what you use. get the ph where it needs to be things will be fine. if you can at the first feed try to add kelp. this helps with the stress your plant goes through. use every other feed. hope that helps

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MangoDuduanswered grow question 6y ago

U check ph and ec? They can be the problem of your plants, you can have a bad tap water that cause lockout

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