He, fellow partner Chris Spargo and the rest of the team had a love of working with farmers and got great satisfaction out of it, he said.
"Farming is a business not a past time. Farmers are looking for the best specialist advice they can get."
Mr Blackman said they were pretty excited about making the finals of the awards again.
"It's a good thing for a smaller provincial firm."
Mr Blackman said the rural area was one which definitely warranted specialisation - particularly around areas like succession planning, which he has written a book about.
Succession planning is also something the firm puts an emphasis on for their own business.
Mr Blackman said they were working to ensure its longevity beyond when he and Mr Spargo left.
Practice manager Sheree Bennett said the firm had either won or been a finalist in the awards every time they'd entered."
She said the recognition confirmed they were specialists in their field and were making a difference.