The exuberant TV designer won a silver gilt for his World Cup to Town garden, which featured a mini football pitch, football hanging baskets and football-shaped plants.
Domoney said: "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. It is a great opportunity for retailers to inspire the public using the biggest sporting event in the world.
"Everything we have used is readily available from garden centres and our key thing here is to drive footfall. It's the first garden I have built that I would be happy to have in my own home."
The show garden was built around a small pitch with raised beds featuring sturdy varieties that could stand up to being hit with footballs. A terrace with a television and viewing benches featured footballs turned into hanging baskets and was planted with turf grass.
Domoney used Houttuynia to reflect the colours of the South African flag, while plants such as John Woods Nurseries' new Coprosma 'Pacific Night' were selected for their retail friendliness.
"Most show gardens don't touch old ornamental plants that are hard-wearing but I'm a great one for using plants that I encountered early on in my career and that people will remember," said Domoney.
"The key thing is not to create anything that's not readily available so I have never been big on using things like sculptures that you could never find. A garden centre could easily recreate most of this by laying a bit of a pitch and putting on a load of football-friendly offers."