Outdoor vegetable gardens thrive through summer in any area of the country with enough sunlight, given the right planting and care. In warmer climates gardeners can replant in fall to enjoy winter vegetable gardens. 

• Greenhouse fan
• Heater
• Thermometer
• Hose
• 3- to 5-gallon pots
• Quick-draining soil
• Organic compost
• Fertilizer
• Stakes or veggie cages
•  
• 1
  Set up your greenhouse with a heater, fan and thermometer and lights. Clear out any old litter, pots or plants.
• 2
  Plant all vegetables in 3- to 5-gallon pots with drainage holes, to maintain a flexible setup. Plant same-season veggies that require the same care, for best success. Choose summertime vegetables such as beans, tomatoes, peppers, eggplants, pumpkins and onions, or winter veggies like broccoli, beets, lettuce, rutabagas and turnips.
• 3
  Mix together equal parts of quick-draining potting soil and organic compost. Fill your pots three-quarters full with the mixture. Add 10-10-10 fertilizer to the top inch of your planting soil.
• 4
  Plant one vegetable seedling per pot. Fill each pot to the brim with water. Put vegetable cages or stakes in pots planted with tomatoes or beans to provide these vining plants with support when they get taller.
• 5
  Put the pots in the greenhouse in rows of like vegetables. Leave enough room between the rows so you can water and tend the plants.
• 6
  Leave the greenhouse doors and windows open in the summertime to take advantage of natural light and warmth. Close the windows when temperatures drop under 60 degrees, if you're growing summer crops. If you're growing winter vegetables, close the greenhouse windows when temperatures drop under 50 degrees.
• 7
  Turn on the heater, thermometer and fan to maintain a temperature of 70 degrees in the greenhouse for summertime vegetables. Keep the temperature at 60 degrees for winter vegetables. Supplement natural light as the days get shorter so your summertime vegetables receive eight to 10 hours of natural and artificial light every day.
• 8
  Water the vegetables with 2 to 3 inches of water every week. Feed them weekly with 10-10-10 fertilizer once they begin to bloom.