They say crabgrass rule the world. I don't know who "they" are, but "they" are right. You don't see crabgrass on postcards from Tucson--you see cactus. This winter, it's not cactus trying to take over my yard--it's crabgrass. There stuff thrives on our mild winters. I've tried chemicals to minimal effect. I spent yesterday out in the yard burning them with propane, which works better than pulling them up and is easier on the backbone. I wish the people who build robots would come out with one that pulls crabgrass. I'd buy one. They've got robots for other stuff like moping floors. Or a drone that zaps crabgrass with a laser--that would be something. Damn horrible plants.