Wood Release: Tree of the Knowledge of Good and Evil

Using his Wood Release, Hashirama Senju could grow a massive tree in an instant, on any surface. The tree's roots would then spread across the battlefield and begin absorbing nutrients from the ground, converting it into chakra. The tree would then begin to sprout fruits, similar to apples, called Chakra Fruits (チャクラチャクラ, Chakura furuutsu). When eaten, the chakra stored within the fruit can cause wounds to heal, as well as restore the eater's chakra.

Upon gaining Senju DNA and the Wood Release kekkei genkai, Ryun Uchiha also displayed the ability to use this technique. In his version, Ryun revealed that by altering the chakra used while activating this technique, some of the fruits grown by the technique can turn out poisoned; making it risky for an enemy to eat fruit produced by the tree. It is unknown if Hashirama could do this with his version, or if this is a new addition to the technique by Ryun.

Trivia

 * The name of this technique comes from the  from the Hebrew Bible. It was one of two 'magical' trees in the story of the Garden of Eden.