does overwatering cause yellow leaves
by Nebula Haze. Problem: After watering, your plants start drooping. Usually the droopy leaves will feel firm and appear curled down (the whole leaf will be curled, not just the tips, which is often a sign of nitrogen toxicity). With overwatered cannabis plants, you may also notice Chlorosis (Leaf Yellowing). Overwatering does not always mean you've been giving the plant too much water. It often means you've been giving the plant water too often, or growing plants in a growing medium without enough drainage.