What varieties of plums bloom later to avoid frosts?

I live in Ky and we have healthy plums, but they always bloom early and we lose the fruit. What are some later bloomers?

Try some North American natives; they are better adapted for our late frosts.  Oikos nursery based in Michgsn sells some.  You also find them sold under the name "beach plum" in some catalogs.

 I had a Stanley Plum tree that bloomed a month or so later than all my others.
It was purple with yellow inside.  Quite tasty.  Severe floods after tropical storms killed the tree though.

Yeah we actually have wild American and Chickasaw plums on the farm, and they do okay but the birds pick anything that doesn't naturally abort. I like them and the Chickasaw plum I think would make a perfect rootstock for size and tolerances, but I want larger fruit. I like that my other trees are very healthy and vigorous, they just don't like to wait. We'll spray them down in Spring and they still fall off. We have Santa Rosa, Methley, and Blue Damson. I will have to look into Stanley plum. Thanks guys!