Posted: 12/08/2015 at 17:33
Ok Jim, look at this hedge, I planted these in winter 2012. They were 45 cms, eighteen inches or so. Bearing in mind I have cut them many times because I only want to keep them at 7' for reaching purposes, they have served the purpose.
You could spend out on tall ones, but did you see a thread started by Befuddled? They were no good. He thought they were pot grown, they weren't they were just put in a pot for selling. If yours are already 2.5 mts they will be pretty pot bound. Take one out of the pot and have a look, but that size tree would need to be in at least 60cm pots to grow properly.
maybe your garden outlet is good, I don't know, but they will still need time to establish After planting, there's more chance of wind rock.
Mine were so cheap, can't quite remember I don't know if eBay stores details of sales that long ago, but I wouldn't buy big ones.
At the end of the day, it's your choice. All I can do is point out a few things, but for me, it's small and be patient every time.