By 1989 the nursery was producing bedding plants, basket plants, vegetables and herbs - the model that the nursery still follows.
Over the years Colour Gro has invested in underfloor heating, shade screens and sodium lighting.
Beadsmoore said: "The company ethos is built on reliability and sustainability with emphasis on all core services provided in house from a large number of full time, experienced staff."
He added that sales were six per cent up this year, added: "Over the years a team of hardworking employees has been built up who are the backbone of the business. Job security and long-term stability for this team is a high priority and it matches their desire to offer all of their customers stability of supply."