More than 20 members have signed up to form the North Wales Growers (NWG) group and attended the launch at Portmeirion gardens on 14 June.
Officers were appointed in early June and the committee will be led by the association's chairman Nat Maurice-Jones of Wrexham-based Rosemary Nursery.
Jones spoke at the event about the development of the group and its activities to date while RHS Chelsea Flower Show gold medal winner Medwyn Williams MBE opened the group's website, www.northwalesgrowers.co.uk, which was designed by Conwy-based company DoodleIT.
The association has also produced a member's business directory and a plant-trail leaflet, describing the members and services they represent.
HNW project development officer Garry Smith said: "North Wales Growers wants to promote co-operation between the sectors and more interaction between wholesalers and retailers, and to be sustainable for the future."
The North Wales Growers association represents a variety of horticultural sectors and is made up of 22 members from specialist nurseries, wholesalers, historic gardens and garden centres in the region. Seiont Nurseries and Bodnant Garden are members.
In its initial stages the group was known as The North Wales Plant Growers' Association but will now use the name North Wales Growers.