Reason: Merge to Giant's Cave
The Beanstalk was an enourmous plant in Fairy Tale Land that leads to Giant's Cave It's Part of the fairytale "Jack and the Beanstalk"
History
Jack leaded a mob over the beanstalk in attempt to kill the giants, but one survived, trapped and killed him.
Emma, Captain Hook , Mary Margaret Blanchard, Mulan and Aurora went to the beanstalk to stole a Magic Compass from the Giant. Emma ordered Mulan to cut the plant if they didn't back in 10 hours.
The Time past and Mulan starts cutting the beanstalk but Emma appeared and tells Mulan to keep the beanstalk because Captain Hook was arrested in the Cave and she wanted to give them some hours of vantage over him ("Tallahassee")