Imagine you’re visiting a carrot farm. Your friend, the farmer, hands you a freshly pulled carrot to munch on. Would you eat it without washing it? Probably not! You would first wash it, worried about germs from the soil clinging to it. And those concerns are valid. Studies show that just one gram of soil from the rhizosphere—the space around plant roots—can contain up to one billion bacteria. This region is bustling with countless other microbes too, including tiny worms called nematodes, fu...