Rhubarb

You may be looking for the audio of the same name or Roobarb.

Rhubarb was a plant. Its stalks were eaten boiled. (AUDIO: Lost in the Wakefield Triangle ^[+]Loading...["Lost in the Wakefield Triangle (audio story)"]) Bernice Summerfield described it as a "hardy perennial". (AUDIO: Rhubarb ^[+]Loading...["Rhubarb (audio story)"])

Martin Chisom grew rhubarb in Yorkshire inside a forcing shed. A metal bug was able to influence the plants to grow at a high rate and even constrict people, as they did Chisom.

The Third Doctor was able to mediate in a trade agreement wherein Chisom would supply manure in return for "the tenderest rhubarb in the galaxy, grown at a rate unheard of on Earth". (AUDIO: Lost in the Wakefield Triangle ^[+]Loading...["Lost in the Wakefield Triangle (audio story)"])

Rhubarb was an ingredient in rhubarb crumble. (COMIC: The Fractures ^[+]Loading...["The Fractures (comic story)"])

The spores of dark rhubarb carried both the seed of the plant and the idea of the plant itself. It once infected the inhabitants of the Eternity Club, eventually being stopped by Bernice Summerfield. (AUDIO: Rhubarb ^[+]Loading...["Rhubarb (audio story)"])