CowPots are the BETTER bio pot.
USDA Specialty Crops Research Initiative funded a study. Results showed manure-based containers had nearly completely degraded (88 percent), while straw, wood fiber, soil wrap, peat, coir, and rice hull degraded 18-47 percent.*
Tender, young roots easily penetrate the sides and bottoms of CowPots. This allows for air pruning and formation of root buds. Secondary root development throughout the pot grow into dense, healthy root systems. This root mass is recognized as critical to growing healthy plants and that is why CowPots are the preferred bio pot.