The term 'TEA PLANT' can be broken down into two crossword solutions: CAMELLIA (8 letters) and THEA (4 letters). CAMELLIA is a genus of flowering plants in the family Theaceae, native to eastern and southern Asia. It is best known for its use in making tea, as the leaves of certain species are used to produce tea leaves. THEA is a genus of shrubs and trees in the family Theaceae, also native to eastern and southern Asia. It is also used to make tea, but is less commonly used than CAMELLIA.