Farmers gutted about cow plants (7)
I believe the answer is:
flowers
'plants' is the definition.
(flower is a kind of plant)
'farmers gutted about cow' is the wordplay.
'gutted' suggests removing the centre (to gut something is to remove its insides).
'about' indicates putting letters inside.
'cow' becomes 'lower' (I've seen this before).
'farmers' with its centre removed is 'fs'.
'fs' enclosing 'lower' is 'FLOWERS'.
(Other definitions for flowers that I've seen before include "Blossoms" , "Blooms" .)