Which issue can arise from over-fertilization of house plants?

Over-fertilization of house plants can indeed lead to leaf drop. When plants receive an excess of nutrients, particularly nitrogen, it can disrupt the natural balance within the plant. This can result in nutrient burn or toxicity, where leaf edges may start to brown, and ultimately, the plant may shed leaves as a stress response. The leaves droppping is its way of conserving resources and signaling that conditions are not favorable for healthy growth.

In the context of house plants, it's essential to monitor the application of fertilizers carefully, as they typically have specific nutrient requirements. When the nutrients are available in excessive amounts, it can cause imbalances that lead to physiological stress, manifesting in symptoms such as leaf drop. This highlights the importance of adhering to recommended fertilization practices to maintain plant health.