sorry for the late reply, The one with the pink tufts is definately a mimosa tree, or silk tree (Albizia julibrissin), White flowered one looks like a type of Asclepias (milkweed), the purple flowered one is a purple loostrife (Lythrum salicaria). How did I do? I was unsure about the Asclepias as it isnt a type we have in ohio although I know it is a diverse genus with similar flowers. let me know and send some more.
Josh