What can excessive shading in a greenhouse lead to?

Excessive shading in a greenhouse can lead to reduced plant vigor because plants rely on adequate light levels for photosynthesis, which is crucial for their growth and overall health. When shading is too intense, it limits the amount of light that reaches the leaves, inhibiting the plant's ability to convert light energy into chemical energy. This inadequate light exposure can result in stunted growth, weaker stems, and an overall decline in the plant's health and productivity. Essentially, without sufficient light, plants may not be able to produce enough energy to support their metabolic processes, leading to a reduction in vigor and vitality. This highlights the importance of proper light management in greenhouse environments to ensure optimal plant growth.