Nonwoven grow bag thickened 300g nonwoven fabric means your grow bags easily stand upright making it easy to fill the bag by yourself. These grow bags provide excellent air circulation and drainage: Do not worry about overwatering. The grow bags readily breathe, keeping roots and soil oxygenated and cool throughout the year. The automatic air-prune feature ensures roots do not get tangled, allowing for more surface area for water and mineral absorption. Why do you need fabric to grow bags? The fabric grows bags readily breathe, keeping roots and soil oxygenated and cool throughout the year. Great for developing strong, fibrous roots and keeping them healthy without needing regular root pruning. How does air pruning work? Air pruning happens naturally when roots are exposed to air in the absence of high humidity. The roots are effectively “burned” off, causing the plant to constantly produce new and healthy branching roots. If roots are not exposed to air, they continue to grow around the container in a constricted pattern. Is it effective for increasing yield? Using a fabric grow bag means easy watering, less stress on the plant when moved, and quicker transplant times as filling requires no more than one person instead of several people, allowing others to handle additional work in the garden.