The Golden Fleece can save Thalia's tree.
Luke poisons Thalia's tree. He and his army of evil people who are siding Kronos wanted the camp destroyed. They said first camp and then they would move on to Olympus.
A pine tree
Thalia Grace
No, Thalia does not die. She becomes immortal, and joins Artemis's Hunters. However, most think that Thalia died when she was turned to a tree, but this is not the case. She was only frozen in time.
Thalia Pellegrini is 38 years old (birthdate: August 16, 1978).
Thalia Grace is alive in book one, but she was in the form of a tree. In book two, her tree form was poisoned. The golden fleece was found to save her. The fleece worked better than expected, and she morphed back into her human form. It was in book 3 that Thalia joined the hunt with Artemis and became immortal. She was present as a hunter through the remainder of the series.
Thalia is Zeus's daughter. She is a pine tree that protects camp half blood. Thalia becomes human again in another book. Thalia was also friends with Annabeth, Luke and Grover.
15
She was protecting Annabeth and Luke so they can get to camp and Zeus had pity on her a decided to turn her into a tree.
THE plot is that Thalia's tree isn't supporting the border of camp half blood from monsters anymore so they must retrieve the golden fleece to keep Thalia's tree alive.
Thalia was born on December 22nd, 1988, which would make her 21, but as she was frozen in time when she was turned into a tree, she was 15 before she was granted immortality.