The Princess Plant is a plant seen in "Death in Bloom." Finn and Jake killed it by doing the following: Partying with it, taking it out of its pot, stuffing food into its roots, and setting it on fire. It then went to the Land of the Dead, where Death had it. Finn and Jake attempted to retrieve it, but Jake lost his memory, and Finn lost the music battle. They then retrieved it when Finn said "Peppermint Butler says hi." It was eaten by Princess Bubblegum at the end, changing her hair.
The plant is placed within a small green pot, it's stem is very long and thin. The flower is white with each having a long extended petal.
- The hairstyle it gave PB is similar to that of her 13 year-old appearance, even though she had not been turned 13 yet.