Competition rules within the EU delayed the release of the Home Grown logo, which was scheduled to take place last October.
The HDC worked with Defra's State Aid Unit and the industry to finalise how the symbol could be used without conflicting with European State Aid regulations.
The main sticking point was using regional labelling, which could be seen to be promoting the UK national and regional product above other products in Europe.
Growers will be able to add their own business name instead, in a strapline under the logo.
Owner Bill Godfrey of W Godfrey & Sons and Planta Vera owner Morris May had the idea two years ago.Godfrey said: "I hope HDC members will agree that this has been a good use of their levy and will use the symbol effectively in their own businesses."
Impetus Marketing, which led the initial market research, will create a campaign to show plant buyers and gardeners the benefits of purchasing locally produced plants bearing the Home Grown logo.
Meanwhile, The Bransford Webbs Plant Company has launched its own Locally Grown logo. It will appear on point-of-sale boards distributed to local garden centre customers.
Bransford Webbs sales director Adrian Marskell said: "This initiative aims to give customers the option to buy plants that have been grown locally."