Cost: $1 per bulb
Benefit: This onion relative contains more than 70 active phytochemicals, including allicin, which studies show may decrease high blood pressure by as much as 30 points. High consumption of garlic lowered rates of ovarian, colorectal, and other cancers, according to a research review in The American Journal of Clinical Nutrition. To boost garlic's health effects, be sure to crush the cloves and let them stand for up to 30 minutes before heating them. Extend the life of your garlic by storing it in a paper bag in the refrigerator.
Extra: Fall is Garlic Planting Time