The award-winning business near Sevenoaks in Kent transformed the glasshouse into an urban street with house-fronts forming a backdrop to gardens brimful of its home-grown flowers. A black cab, Union Jacks and hanging baskets completed the set.
Chairman Paul Cooling said: "The glasshouse started off as a trial area for plants in containers but we decided to show the results off to customers. It shows what you can put in baskets, patios and gardens for a celebration.
"By September we will have cleared this because the Land of the Rising Sun officially comes to Knockholt," he added. "The Japanese Garden Society and the RHS are working together to set up an Oriental garden."
Coolings is also planning to extend its shopping area by 50 per cent and is opening a satellite training centre in Dulwich, south London. Garden enthusiasts will be taught RHS general horticulture levels 1 and 2, according to managing director Gary Carvosso.
It also runs courses at its 5.5ha main site, while an outreach programme for more than 20 schools has seen Coolings' staff teaching 600 pupils how plants germinate and grow, as part of the national curriculum.