Prince William and 'Princess gave her a specially created variety of rose when they visited with the royal family in the mountain kingdom last week.
The red flower, named the "Queen of Bhutan Rose," was created for the King and Queen of Bhutan, who founded the annual Royal Bhutan Flower Show last year and have started an English garden.
Kate, who received a gift of her own – a Buddhist symbol necklace by Bhutanese designer Sonam Rabgye – from the Queen, presented the new rose with William at their audience with the royal couple last week.
Samir Hussein / WireImage
The Foreign Office, which was behind the gesture, says the rose had been funded by a private donation and 75 plants have been sent to Bhutan where they are now being cultivated.
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Hugo Swire, Minister for Asia, said in a statement that he was "delighted" William and Kate "have been able to present this rose to the King and Queen of Bhutan as a symbolic gesture of the growing friendship between our two countries."