"We are seen as a small part of the process. At the moment seen as a land-based system but a new way will be to look at the benefits.
He said the biggest issues he has been talking about are labour, planning and bio-security.
Curtis-Machin said: "One thing is clear, if we are going to have a credible voice, going to have to be a credible industry.
"We talk about health benefits, which sounds great, but what is it worth? We need to nail the statistics.
"The problem is complex but we have lots of potential. We are developing new markets, new skills and new jobs, such as vertical gardening.
"We have exciting tools to help evaluate the figures. Like i-Tree, which puts £ s d value on money saved and reduction in pollution. That’s when we start to get attention, for instance the of importing oak – several hundreds of thousands of pounds are imported. The Government wants bio-security and we want to grow business.
"It’s down to analysis and ultimately down to use working together. We can all down our thing and have our differences but if we join up, it starts to become bigger numbers. It's all about the importance of data."
He said the National Minimum Wage is "a real challenge for agriculture and horticulture" and once no one wants to go back, but the industry can lobby on the amount.
BEST NEW PLANT
Winner: Begonia ‘Summerwings’ series from Kernock Park Plants. Elegant, stylish and vibrant flowering begonia with dragon wing-shaped foliage. These flower right through summer with little maintenance needed. A constant delight, ‘Ebony and Orange’ has beautiful bright orange flowers that contrast with the dark, waxy foliage on this well-behaved plant.
BEST NEW PRODUCT
Winner: Evolution polytunnel cover from XL Horticulture (pictured below).
Highly Commended: Woodbeare Nurseries and Rainbow Plants