The low-cost alternative to plastic pots used by greenhouse growers is now available to the residential grower. These grow bags are made from a specially formulated plastic that provides for a longer life than any other on the market. The bags have pre-punched holes for easy draining and stand upright when filled with media. They are widely used in greenhouse drip irrigation applications, but you'll find them ideal for bedding plants, tree seedlings, tomatoes, bell peppers, cucumbers, and more. When filled with media, the bag becomes a cylinder shape.