He studied commercial photography practice at Leeds Metropolitan University for three years following the Heighley Gate sale. His work recently helped UNW accountants in Newcastle.
Lishman also photographs the Newcastle Falcons.
Lishman told The Journal: "We sold the garden centre because we had been actively pursued by a large, national chain.
"As a family, we would have been foolish not to consider it and given the recent economic climate, I certainly think we made the right decision.
"I had two options at that stage; either to study for an MBA at Durham University or to pursue something I was passionate about but didn't know a lot about.
"I decided to go with the latter.
"When you see your work in print, like on the UNW wall, it really gives you a buzz and makes you so pleased you decided to follow a passion."