What are the key differences between polyethylene and polypropylene outdoor flower boxes in terms of durability?

When choosing outdoor flower boxes, understanding the durability of materials like polyethylene and polypropylene is crucial. Polyethylene flower boxes are known for their flexibility and resistance to cracking, making them ideal for areas with fluctuating temperatures. They also offer excellent UV resistance, preventing fading over time. On the other hand, polypropylene flower boxes are stiffer and more rigid, providing superior structural integrity. While they are less flexible, they excel in high-temperature environments and are highly resistant to chemical exposure. Both materials are lightweight and weather-resistant, but polyethylene tends to be more impact-resistant, whereas polypropylene offers better long-term shape retention. Ultimately, the choice depends on your specific climate and usage needs.