What are the best fabric colors for reducing heat absorption in outdoor flower boxes?

Choosing the right fabric color for outdoor flower boxes can significantly reduce heat absorption and protect your plants from excessive warmth. Light colors like white, beige, and pastel shades reflect sunlight rather than absorbing it, keeping the soil and roots cooler. Dark colors, such as black or deep brown, tend to trap heat, which can stress plants. Additionally, fabrics with reflective coatings or UV-resistant properties enhance cooling effects. For optimal results, pair light-colored fabrics with breathable materials to ensure proper airflow. This simple adjustment can improve plant health and longevity in hot climates.