I cannot make roses at all and I have a wedding cake that the bride decided she wanted buttercream icing roses insted of real ones... My question is where can i buy roses from not the gumpaste or royal icing ones.???

You should be able to buy them from a local bakery. Did you take Wilton courses? If so- can you ask your teacher to make them for you? I've thought about doing that before- in a pinch. I think my teacher would do it for free, but I would certainly compensate her!