RHS shows director Stephen Bennett reluctantly admitted the gnome after being put on the spot by Domoney at the show's opening press conference.
Introducing the gnome, Domoney told journalists: "We have been waiting for about 10-years for the show to fit in with the World Cup where we can guarantee that England would still be in it. As there is no real England mascot this year, we decided to introduce our own one, if Stephen will let us."
Bennett grudgingly conceded, muttering: "I think I'm going to be in trouble for this," adding, "For the sake of the lads in South Africa, we give you permission."
The gnome was supplied by B&Q as part of their World Cup range, designed to beat sales slump associated with major sporting events.
It is wearing a replica of the current England shirt and is priced at £12.98.
The gnome provided the finishing touch to Domoney's Silver-Gilt winning World Cup garden which was packed with retail inspiration.
For more see Horticulture Week 25 June.