The care for them will be similar, you just need to keep them apart enough so proximity does not become a problem. I would assume a width of 6-8' if you cannot get specifics. Your local library may have book on camellias that you can check. Acidic, well draining moist soil plus 3-4" of mulch in a site that gets morning sun and afternoon shade (or dappled sun) will keep them happy. Cut the roots every 2" if they are root bound.

Go to the American Camellia Society Website for more information:

http://www.camellias-acs.org/display.aspx?catid=3,9

Here is a link that might be useful: Jury's Yellow

Thank you luis, I've been able to find all of them except Apple Queen and White Peony. I have them all in the ground, I have the perfect soil for camellias. They are all setting buds, and are big healthy plants.

white peony is a medium,white, full peony form japonica.Apple Queen is a white-edged blush pink large loose peony form japonica with vigourous upright growth habit

Thanks johnie, that completes my descriptions. They have all been in the ground a month now and doing great.