What environmental factor is NOT considered to influence plant growth?

Wind direction is not typically considered a direct environmental factor influencing plant growth in the same way that soil type, light, and temperature do. The other factors play a more substantial role in determining how well a plant can grow and thrive. Soil type affects the availability of nutrients and water, light is crucial for photosynthesis, and temperature influences metabolic processes within the plant. While wind can have some impact on plant health—such as causing physical damage or affecting moisture loss—its direction does not directly influence the fundamental biological processes that are vital for growth in the way the other factors do.