Growing vegetables in grow bags is an ideal way to enjoy fresh garden vegetables when gardening space is limited. Typically, grow bags are large enough to accommodate two to three plants, keeping in mind the soil requirements of those plants once they reach mature size. Grow bags are often used to grow vegetables that would otherwise require cages, staking or trellises in a traditional garden, such as tomatoes, beans or peas.
Fill the grow bag 2 inches from the top with compost or potting soil. Ensure the soil is loose and free of large clumps.
Add 1/2 cup of vegetable time-release fertilizer to the soil. Mix the fertilizer in, by hand.
Hang the grow bag in its location. A hook affixed to a building or a gardening pole works well.
Poke holes in the bottom of the grow bag with a nail or wooden skewer. These will act as drainage holes to allow excess water to escape the bag.
Cut out the perforated holes for the plants. The holes should be evenly spaced apart to accommodate two or three plants.
Remove the soil from the planting holes. Create a space in the soil slightly larger than the root ball of the plants.
Place the root balls of the plants into the planting holes. Fill the gaps around the root balls with the soil you previously removed.
Water the plants thoroughly. Pour water into the top of the bag until water begins to drip out the bottom drainage holes.
Water regularly to keep the soil moist. Grow bags exposed to all-day sunlight usually require daily watering.
Fertilize the vegetable plants two weeks after planting with 1/2 cup of diluted liquid vegetable fertilizer. Repeat fertilization every two weeks until the plants are close to mature size, then increase fertilization frequency to once every seven to 10 days.