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The most common cause of marijuana leaf cupping aka leaf margin rolling, leaf margin burn, and leaf tip curl/burn is overzealous use of marijuana plant food. In relationship to factors such as marijuana plant vigour and rate of growth. Leaf burn is often the very first sign of too much marijuana fertilizer.
Remove the leaves from the buds. When the marijuana is well cured, i.e., when the branches themselves are essentially dry, you can bend the small leaves that grow out of the buds off at their stems to snap them off.Though you probably won't want to smoke them, these leaves have a variety of uses for creating other cannabis products (see Tips).emove the leaves from the buds. When the marijuana is well cured, i.e., when the branches themselves are essentially dry, you can bend the small leaves that grow out of the buds off at their stems to snap them off.