Some fruits and vegetables that you can grow in containers.Use equal parts of peat moss, potting soil, and vermiculite, perlite, or clean sand. Fill the containers to within an inch or two of the rim.If you use an organic fertilizer at planting time, supplement it with weekly applications of fish emulsion or reapply dry organic fertilizer according to package directions. Watering. Pests. Harvest. Sources. More: The best crops for pots.