This is no ordinary pot! The unique "Vigoroot" fabric works by air-pruning the roots of your plant which dramatically changes their formation and their ability to sustain the plant in a limited amount of compost. It encourages more vigorous growth of the root system enabling the plant to absorb more nutrients. The Vigoroot fabric prevetns the roots from growing too long and keeps them from becoming pot-bound. The super strong root system means your plants will be more resistant to harsh weather pests and diseases. Detailed instructions included! For nearly 20 years the Haxnicks company has been designing and manufacturing innnovative garden care and plant protection products for their customers in England. Tierra Garden is proud to offer this distinctive line in the United States!