The "bearded lady" drag artist revealed he found the floral arrangement from the singer and his partner, David Furnish, in his dressing room as he recorded an interview for the Graham Norton show.
He told BBC1 presenter Norton, in the interview to be screened tonight, that he also received a message from supserstar Cher.
"I was so excited to receive the tweet, which said, 'darling you deserve a lovelier name and better wig'. Cher, THE Cher, tweeted me."
The Austrian, whose real name is Tom Neuwirth, said of his dressing room bouquet: "The card read, 'we love you, Elton and David'."
He also said he had hopes of hosting the contest next year when it is staged in Vienna, although as for the immediate future he was going to take his time to work out what he will do following the win.
"Our society is so fast so I'm going to sit back and choose wisely. I will have to make new stuff. My goal is a Grammy so my songs will have to be good," said Wurst. "I have cast myself in the role of host at Eurovision next year in Vienna."
And he said he was still to mark the contest win properly as he rested after the final. "I slept. I haven't celebrated yet."
The proud victor took the winning trophy to the studio while recording the interview to be screened at 10.35pm tonight, adding: "I am embarrassed that I take it everywhere with me."