One of the first things that Tyson Haworth does when we meet on his farm in rural Oregon is spread his palms out, up toward the April sunshine, and apologize. “I just applied some predatory fungus in the greenhouse,” he says, splaying his fingers and inspecting his hands. He doesn’t use any synthetic pesticides on his farm, he explains, preferring predatory bugs and bacteria and fungi instead, and before he can show me around, he excuses himself to wash his hands in his house adjacent to the farm.