The Tree is an ent who lives in a deep swamp, he is really mean to non-plants. Dislikes lumberjacks.
After defeating the boss, player receives a Blue Chest as a reward. The Tree may be defeated only once per timeline.
After defeating the The Tree for the first time, player receives an achievement "Clear Area XIII" which multiplies non-tap monsters' DPS by 1.02.
- Boss is reference to fictional creature The Ent