Mandragora are plants in Haunting Ground that Daniella personally tends to in her private section of the greenhouse room. Keeping in line with classic alchemy and folklore, the mandragora utter an unearthly shriek, which raises Fiona Belli's panic. If Fiona attempts to hide while carrying a mandragora, the mandragora will scream and send Fiona into an instant panic.
There are various colors, including white, red, purple, yellow and blue. Fiona eventually takes a white one and gives it to a monstrous-like hand in the cemetery. The mandragora is devoured by the creature and the creature disappears, allowing Fiona to travel underground.
Originally, the Mandragora was a fusion of plant and animal created to produce large amount of blood required to complete The Grand Process. Multiple Mandragoras were created in an order to produce the needed liquid composition, but only the Hebel combination seemed to produce the right liquid. In current research, the creator's subject was identical to a real Mandragora. The only way to separate the real one from the substitutes are the flower color and the ever so-faint essence, only detectable by animals.
- Real mandragora, or mandrake, are plants belonging to the nightshade family which contain hallucinogens.
- Cornelia Hayes O'Herlihy, Fiona's voice actress, also voiced mandragora.
- Mandragora have appeared in various pop culture and fiction, including Harry Potter and the Chamber of Secrets.