What is that flower called that looks like a blue pinwheel?

I saw these at the biltmore estate gardens in asheville and fell in love with them, what are they?

What is that flower called that looks like a blue pinwheel?
Is it...





Phlox-there are ground cover types and tall border kinds: http://images.search.yahoo.com/search/im...





Plumbago-they have blue flowers that resemble pinwheels too: http://images.search.yahoo.com/search/im...





Lithodora diffusa-ground cover with brilliant blue flowers: http://images.search.yahoo.com/search/im...





Vinca-there are annual and perennial varieties but all have similar flowers: http://images.search.yahoo.com/search/im...





I found this on a site: "Many of the plants are labeled and there are handouts for a self-guided tour. For more information, call 1-800-543-2961 or 1-704-255-1700 or visit their web site at www.biltmore.com." So, if we really can't figure it out, perhaps you can call or email.





Hope this helps. At least we can narrow it down if it isn't one of these. Do you remember if it was was a sun/shade plant or ground cover?





EDIT: Okay, I found this link with what's blooming now (http://www.biltmore.com/visit/gardens/bl... and I'll see if any of these may be it.


Hyacinth: http://images.search.yahoo.com/search/im...


Phlox divaricata (grows in clusters) http://images.search.yahoo.com/search/im...


Petrea (Queen's Wreath) http://images.search.yahoo.com/search/im...
Reply:Can you describe the flower better...what size are they (size of a dime, size of a nickel, etc), were they formed in clusters, did it flower up the stem or are the blooms at the ends of the stems... What does the foliage look like, what is gray or green, how tall was the plant, what color were the leaves...





This may help us help you. Thanks.
Reply:Maybe ageratum if it is a bedding plant?


http://images.google.com/images?um=1%26amp;hl=...
Reply:If they were in a greenhouse perhaps they were bedding plants, Brachyscome or Felicia amelloides possibly? Could even be Myositis.
Reply:Columbine or possibly clematis
Reply:Periwinkle
Reply:scabious