The 150-year-old Hillier Nurseries, based in Hampshire, is chasing a record 70th consecutive RHS Chelsea Flower Show gold medal.
Ricky Dorlay is preparing Hillier's 4,000 Chelsea trees and shrubs for a 50th year and Andrew McIndoe is designing the Hillier exhibit for a 25th year.
But at this year's show (19-23 May) Hillier will have a Chelsea first with the inaugural "Young Hillier Day".
For one day only on 22 May, and for the first time, a show-manning team of 14 Hillier staff, trainees and apprentices, Writtle College students and RHS Wisley student Jamie Butterworth will take over the running of the largest exhibit in the Chelsea Great Pavilion.
From 8am to 8pm the younger generation will be managing the exhibit, fielding gardening queries from show visitors, maintaining the plant material and sharing information and advice with gardeners.
Three members of the Young Hillier team are Hillier Garden Centres management trainees, five are Hillier nursery or garden centre employees, including 16-year-old production horticulture apprentice Lewis Young, five are horticultural students from Writtle College and one is an RHS Wisley diploma student.
The three Hillier trainees - Zoe Page, Craig Fields and Tam Blake - are the first intake to the new Hillier Garden Centres programme to develop, train and inspire the company's future garden centre managers and trainees.
The Young Hillier staff at Chelsea will also help to stage the 24x24m exhibit, which is a series of interlinking gardens on the theme of "Crossing Continents".
An RHS survey for National Gardening Week this month has found that 89 per cent of 16- to 24-year-olds have a garden or an allotment, or grow something on a balcony or indoors. Jamie Butterworth features in the RHS promotion as its "poster boy".