Los árboles mueren de pie is considered one of the best works of Alejandro Casona (Besullo, Asturias, 1903 - Madrid, 1965) and is also one of the most representative of the poetic theater that characterizes the author. From an action that takes place in a philanthropic institution, the reader/spectator witnesses the violent clash between two frequent values in his theater: fantasy and reality, with the triumph of the latter in this play.

Creator of types, the character of the Grandmother has all the strength of the tragic characters and constitutes the central element of the work. With her temperament and strength, she dominates adverse circumstances, confronts a painful reality, and when she feels weakened, she does not want to be seen fallen, but rather: "dead inside but standing. Like a tree."