On a sunny day, Noddy borrows a magic watering can from Big Ears for Tessie but Big Ears forgets to tell Noddy to use only the tiniest bit. Noddy uses the whole of the contents of the watering can on Tessie's tomatoes and they grow and grow and grow, all over Tessie's house. She can't even get in! Noddy cuts down the massive plants and gives them to toys to use as sun shades.