If you're a vegetable gardener you may already be familiar with certain combos of companion planting. There's the three sisters method that uses corn to support the beans, squash to deter the weeds, and beans to fix nitrogen into the soil at the end of the season. Then there's the use of flowers like calendula to attract pollinators. But petunias? Oh, you betcha! Those showy little flowers are more than just pretty little faces. Not convinced? Read on...
