I have chickens at my house, which is helpful: they poop on the grasses, making them greener; they peck the poops, making them cleaner; they cluck contentedly in beautiful harmony with my brays; they leave their rainbow feathers lying about, bringing some color into an otherwise gray and green world. The chickens used to pass their days under the salmonberry bush until the day that the humans set the salmonberry bush on fire. This had something to do with some garbage the former property owners had left under the salmonberry bush, which FarmWife wanted to dig out and dispose of, and also with FarmWife's desire to make room for raspberry canes. (On a property of merely one and a quarter acres, even one bush can stand between you and your dreams.) Meanwhile—and bear with me, because I am getting to the point—FarmWife has spent the last six years battling triffid-like weeds in one other particular corner of her garden. Horsetails, which have a lovely name but are poisonous and...