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Why are the leaves turning yellow?

Flamingo21started grow question 4y ago

She's 3 weeks into flowering and her upper leaves been getting lighter green id say yellowish... otherwise she seems healthy...

Flamingo21

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Leaves. Color - Pale

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MrStinkyanswered grow question 4y ago

Could well be a potassium deficiency appearing or some lightburn as it is quite even and uniform.

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