Tomatoes are a type of fruit that come from the carnivorous tomato plant, which is located outside Wartwood Swamp.
Background
In "Hop Luck", when Anne and the Plantars are hunting down the ingredients listed in the cookbook to make a pizza for the annual Pot Luck event, Hop Pop warns the kids of tomatoes being dangerous vegetables not sold in Wartwood and suggests harmless substitutes like prunes. Anne, not wanting to risk her family losing and ending up in the Shame Cage, encourages them to take risks by standing up to the carnivorous tomato plant, which then swallows the family. As Anne apologizes for the mess she got her frog family into for just wanting to share a pizza with them, Hop Pop learns that the throat of the tomato plant tastes delicious when eaten raw, facilitating their escape from the plant and avoiding falling into the pit of stomach acid.
In "Friend or Frobo?", Hop Pop tells Marcy she shouldn't have bought tomato seeds from the Seed Store due to his dangerous experience with tomatoes during the pizza ingredient hunt.
