Dobbies has 28 stores in the UK and has reportedly viewed a number of potential sites in and around the city including a green field site at Campsie.
Property director Stuart Wright said:
"As we continue forward with our expansion plans to grow our garden centre business, we are looking at a number of potential sites across the UK, including a number of different sites in Northern Ireland."
In September 2010, Dobbies opened their first store in Northern Ireland, a £9m centre at Lisburn.
Dobbies has plans to have 100 centres by 2018.