What are the limitations of PVC outdoor tree boxes in terms of maximum size?

PVC outdoor tree boxes are popular for urban landscaping due to their durability and lightweight nature. However, they have notable limitations in terms of maximum size. Typically, PVC tree boxes are limited to widths of around 4-6 feet and depths of 2-3 feet due to material constraints. Larger sizes may compromise structural integrity, leading to warping or cracking under weight or weather conditions. For very large trees, alternative materials like fiberglass or metal may be more suitable. Additionally, transportation and installation challenges arise with oversized PVC boxes. Understanding these limitations helps in selecting the right tree containers for urban projects.