The exhibit will include live displays of the Olympic sport and Hillier managing director Andrew McIndoe's design and planting schemes will make reference to the sport through form and colour.
The exhibit is intended as a tribute to the Queen, who is patron of the British Fencing Association, in advance of the jubilee, which falls a week after the flower show.
Hillier will also launch its Choisya 'Aztec Gold' at Chelsea. The shrub was bred by plantsman Alan Posthill, who has worked with Hillier for 50 years.
The evergreen shrub has golden-yellow leaf ends, while leaves in the heart of the plant stay green. It performs well in full sun or shade and is suited to a mixed border or large container.
"It's a good, hardy evergreen shrub," said senior sales account manager Richard Lawton. "It has had really good reactions so far. At New Place Nurseries, which is growing it, managing director John Hedger said it is a dream to work with."