I'm using pots, How Big Should My containers be?

To save garden space, consider growing some of your veggies in containers. In general, the bigger the pot the better so that the roots have plenty of room to grow and there is more moisture in the soil. Make sure your containers have holes in the bottom so the roots don't drown. In large pots, filling the bottom with several inches of gravel will improve drainage. Green onions, lettuce, swiss chard, radishes, and herbs can be grown in smaller pots, at least 3 gallons or 10" deep. Most veggies like peppers, cucumbers, broccoli, eggplant, beans, potatoes, regular onions, and carrots can all be planted in 5 gallon containers or pots at least 14" deep. Tomatoes will do best in a larger pot, around 16" to 18" deep. Using a small trellis with peas, cucumbers or squash will add space for the plant to grow and it looks really nice too. You can even grow strawberries and cherry tomatoes in a hanging pot.