Answer: nightshade

AnswerCrossword Clue
NIGHTSHADEMandrake, e.g.
NIGHTSHADEBelladonna or bittersweet
NIGHTSHADEPetunia's plant family
NIGHTSHADETomato's family
nightshadea name given to various plants, esp of the Solanaceae family and chiefly poisonous or narcotic