Plant bug (6)
I believe the answer is:
nettle
I believe this clue is a double definition.
'plant' is the first definition.
The answer is an example.
'bug' is the second definition.
(I know that bug is a more specific form of the action bedevil)
(Other definitions for nettle that I've seen before include "anger?" , "urticaceous plant" , "Stinging weed - pester" , "Annoy - stinger" , "Annoy; common weed" .)