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What kind of deficiency is that?

GueedoWeedo
GueedoWeedostarted grow question 4y ago
What?
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Leaves. Other
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JerkFlowers
JerkFlowersanswered grow question 4y ago
Nitrogen. Because it is a mobile nutrient, plants can borrow their own nitrogen stores out of their older leaves to make up for the deficiency, which is why the older leaves curl up more and are more yellow.
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