Does polyester fabric hinder root growth compared to other materials in outdoor tree boxes?

When selecting materials for outdoor tree boxes, gardeners and landscapers often wonder whether polyester fabric affects root growth compared to other options. Polyester fabric is commonly used as a root barrier or lining due to its durability and resistance to decay. However, its non-porous nature may restrict water and air flow, potentially hindering root expansion.

Studies suggest that while polyester can prevent invasive roots from spreading, it may also limit healthy root development if not properly designed with adequate drainage. Natural materials like burlap or biodegradable fabrics often promote better aeration and moisture regulation, fostering stronger root systems.

For optimal tree health, consider using permeable polyester variants or combining them with organic materials to balance containment and growth. Always assess the specific needs of your tree species and environmental conditions when choosing tree box linings.