The first TV garden was created in a studio in a former wrestling arena on the outskirts of Birmingham. It was a pop-up garden: the studio had to be used for other programmes, so after every show the greenhouse and potting shed were dismantled and soil shifted.Much was subterfuge. Early TV cameras did not perform well through glass, so the greenhouse frames had no panes. Once, Percy gave the game away when the door jammed and he put his hand through to open it from the other side.