Have you ever described someone as a couch potato or called a dud car a lemon? How do you think this makes a potato or lemon feel? Tiffany finds out it's not fair to the plants.<br /> <br />But there are people who are really nasty to plants – the Topiary Twins, Nettle and Thistle. They do dastardly things. They even keep some plants captive. They are villains of the worst kind.<br /> <br />Tiffany discovers Bindi and Dusty Thorn have a green ambulance. They care for...
