How does canvas fabric handle prolonged rain exposure in outdoor flower boxes?

Canvas fabric is a popular choice for outdoor flower boxes due to its durability and breathability. However, prolonged rain exposure can challenge its performance. High-quality canvas is often treated with waterproof coatings to resist moisture, but over time, continuous rain may cause wear. To maintain its integrity, ensure proper drainage in flower boxes and reapply waterproofing treatments annually. For heavy rain areas, consider using a synthetic blend canvas for enhanced water resistance. Regular maintenance will help extend the lifespan of canvas fabric in outdoor settings.