Alien

“Time-out,” Granuaile said. “Wasn’t there something you could have done about the potato famine?” “That was the first I’d heard of it, honestly, five years in progress by that time. It wasn’t something an elemental would have shared with me. The Irish had grown dependent on a monoculture of potatoes, a mold arrived to feast on that monoculture, and that’s why we should always grow a wide variety of cultivars. But of course Americans are ignoring that lesson now and growing a single potato for all of its French fries. French Frymageddon is coming, I promise you. It would have come already except for the tons of pesticides they’re using to keep the crop viable.”
― Kevin Hearne, Besieged