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Help! What is this?! Upper leaves turning yellow/brown but not the lower ones. Light burn?

seEdcorkstarted grow question a year ago

Help! What is this?! Upper leaves turning yellow/brown but not the lower ones. Light burn?

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Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Color - Dark-brown

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Organomananswered grow question a year ago

No pictures +no diary = no way to help.

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