1. Natural Aging of Older Leaves Not every yellow leaf is a problem. As cannabis plants mature, some of the oldest leaves near the bottom of the plant may gradually lose their green color. The plant naturally redirects resources toward newer growth and reproductive development. If only a small number of older leaves are yellowing while the rest of the plant appears healthy, the change may simply be part of normal plant aging. However, rapid or widespread yellowing deserves closer attention. 2. Too Much Water Overwatering is a common cause of plant stress. Plant roots need both moisture and oxygen.…
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