Stare wildly at flower (5)
I believe the answer is:
aster
'flower' is the definition.
(type of flower)
'stare wildly' is the wordplay.
'wildly' is an anagram indicator.
'stare' is an anagram of 'ASTER'.
'at' is the link.
(Other definitions for aster that I've seen before include "Michaelmas daisy genus" , "Purple pink flowered plant" , "Flowering plant; tares (anag.)" , "eg Michaelmas daisy" , "Stare oddly at the flower" .)