Horticulture New Zealand President, Barry O'Neil said all the contestants had a bright future ahead of them in the in industry.
"All contestants can be really proud of what they have achieved today and the industry they are a vibrant part of," he said.
The New Zealand export and domestic horticulture industry was worth $6.5 billion - and growing - however, young growers still needed support to tackle the "rapid rate of change and number of challenges facing the industry," O'Neil said.
Competitions like the Young Grower of the Year gave young people invaluable experience, to help start their journey as "the leaders of tomorrow," he said.
"People like Jamie show that the future of the industry is in safe and capable hands."
The horticulture industry had a lot to offer and was a rewarding career for those who wanted to help feed healthy food to New Zealand and the world, O'Neil said.