A wide-ranging scientific and cultural history of weeds that reveals just how interesting and useful these seemingly annoying plants can be. We spray them, pluck them, and bury them under mulch; and we curse their resilience when they spring back into place. To most of us, weeds are a nuisance, not worth the dirt they are growing in. But the fact is weeds are a plant just like any other, and it is only we who designate them as a weed...