Mary,, when you say bed, do you mean the garden? If so, I'd wait until Gardenias are fully established, well-rooted plants.
Is Daisy Gardenia hardy to z7b? It might be a good idea if you transplant some in the garden and overwinter others indoors, in case it's too cold for such small babies.
As for separating, you might want to pot individually so roots don't tangle as they grow. Pot accordind to root size, in other words, don't overpot, especially now that autumn is nearing, I hate to say..:) Good luck, Toni