His Royal Highness is known for his keen interest in horticulture and, over the last 30 years, has transformed the gardens of his Gloucestershire home, Highgrove, managing them to the organic and sustainable principles that he has long championed. He became patron of the NEHS in 2010.
NEHS chairman Chris Smith, said: "We are honoured to have HRH The Prince of Wales as our Patron and delighted that he has agreed to continue as an ambassador for the society. His knowledge of horticulture and passion for gardening are second to none, and we look forward to working with him to further develop the important role the NEHS plays in supporting and promoting horticulture in the north."
The society has also announced that its current president, Lucinda Compton, will also continue in her role for a further two years.
The North of England Horticultural Society was established in 1911 to promote gardening in the north. It organises and runs the twice-yearly Harrogate Flower Shows, using profits from the events to support community horticulture across the region.
In 2014 the society funded more than 30 gardening projects, ranging from school vegetable growing for food banks to the restoration of war memorials. The flower shows also provide an international showcase for hundreds of amateur growers and specialist horticultural societies.
Harrogate Spring Flower Show takes place from 23 – 26 April 2015 at the Great Yorkshire Showground. The autumn show will be staged from 18 – 20 September.