Sarricoid

Sarricoids were an artificial form of flowering plant life developed by Professor Sarric. They were fast-growing plants, ready for harvest hours after sowing and high in nutritional value. They could infect humans with spores sprayed from their flower heads, slowly turning them into plant-like creatures under Sarric's control. Sarricoid meal was sold by Vegpro as part of Sarric's plans to conquer Earth. The Fourth Doctor learned they dissolved when exposed to water and had them destroyed. (TVC: Death Flower)