Flutter in hebe trees (3)
I believe the answer is:
bet
'flutter' is the definition.
(I've seen this in other clues)
'in hebe trees' is the wordplay.
'in' says the answer is hidden in the clue.
'BET' is hidden within 'hebe trees'.
(Other definitions for bet that I've seen before include "Wager, speculate" , "Wager, or the sum waged" , "Wager, back" , "Wager, gamble" , "Speculation" .)