The 53-year-old star - who is well known for her diva-like behaviour, once commenting she wouldn`t continue with an interview until a window was opened - let slip she did not like the flowering plant after being handed one at her press conference for movie `W.E.` at the Venice Film Festival.
Clearly thinking her on-stage microphone was turned off, Madonna accepted the flower from a man with a polite "thank you", before turning to her side and saying: "I absolutely loathe hydrangeas. He obviously doesn`t know that."
However, one species of flower the `Celebration` hitmaker does like is roses.
Madonna demanded white roses be placed in her dressing room at the BBC Radio 1 Big Weekend festival in 2008, much to the irritation of organisers.
The singer requested a helicopter take her just 37 miles to the venue in Maidstone, Kent, from her home in London.
A source said: "She had special Kabbalah water shipped in and demanded bouquets of white roses. While she only ate fresh fruit, the same can`t be said of her friends.
"They arrived early and wolfed down free food and alcohol reserved for all the artists."