I have solved this problem by put the cut flower branches immediate into a small pot of water. They look fresh after 4 day affter cutting. Thanks all and sorry about my English
Am I the only one still wondering why you are cutting them? I guess you are selling them? Good luck in that case, and maybe think about selling plants rather than just blooms!
florists sell cut flowers and they also incorporate them in a large arrangement ordered for Hotel lobbies, banquets, conventions and weddings...my friend in the flower district of Manhattan(29th street between avenues 6,7,8 &9th) encapsulate the end of the spike immediately when cut in a plastic capsul with preservatives in it as described by the others in this thread...the trick is not to let the spike absorb air...they cut it underwater then encapsulate it