Catch sight of one of these carts out of the corner of your eye, and you may think you’ve just been passed by a moving forest. Vendors push these nurseries-on-wheels around Bangkok’s sidewalks, hoping to pass an interested buyer. From four-wheeled carts, they sell ferns, flowers, and leafy palms. Though you may have trouble squeezing past them on the sidewalk, they certainly help keep the streets of Bangkok looking green.