HDPE grow bags are made from strong woven high density polyethylene material. HDPE grow bags have full UV protection against the sun for a longer life. Square HDPE Woven Grow Bag 12″x12″x 12″ are ideal for terrace gardens, balconies or small gardens. These offers a wider area for the roots to grow, prevents root circling and promotes better growth compared with plastic pots, which are mostly conical in shape.