A few years ago, I purchased a lot of shrubs and perennial plants at Walnut Creek Nursery in McDonough. I haven't been by there in ages, but the internet has a listing for them so hopefully they are still in business. Prices were on the high end, but I needed quality and expert advice at the time. They offered both plus had a wide selection of plants to choose from.

Walnut Creek Nursery

(770) 957-2167
971 Highway 155 N
Mcdonough, GA 30252

Another idea. Are you familiar with Growers Outlet in Loganville. If not, you may want to check them out. They will open again in August for the fall season. I have bought lots of things from them over the years. Prices are great but quality can be spotty. Sometimes the shrubs they offer are root bound, but some are nice. Just be sure to check them. Also, some of their small pots of perennials have the same problem, but more often opposite problem(poor root system). The prices are really good, The selection varies by the season. They list their inventory/availability and prices on their web site. Link follows.

Here is a link that might be useful: Growers Outlet

Just Add Water Nursery:

3062 E. Hightower Trail

Conyers GA 30012

(770) 761-8882