Well, actually, this weekend we went to a nearby garden centre down a street we hadn't been before. For all you Ashfield/Strathfield area people, it's not that far. It's in Kingsgrove. You can get an idea of the place from their website.
So what was it like? It doesn't do bulk landscaping dirt or rock supplies, but it does do a lot of plants and other usual garden stuff. Was very pleasant to walk around. They were about to launch a new catalogue of stuff, so they were a little low on some things but overall well worth wondering around if you are looking for plants or garden things. It also had a decent looking cafe. I didn't try the actual food, but the pistachio friand was great, and the coffee was as tasty as it looked: