It's good to scatter seed around the borders (5)
I believe the answer is:
edges
'the borders' is the definition.
(an edge is a border or margin)
'it's good to scatter seed around' is the wordplay.
'it's good' becomes 'g' (abbreviation).
'to scatter' indicates anagramming the letters.
'around' is an insertion indicator.
'seed' is an anagram of 'edes'.
'g' going within 'edes' is 'EDGES'.
(Other definitions for edges that I've seen before include "Inches" , "Sharpened sides of knives etc" , "Slowly moves" , "They're farthest from the middle" , "Bounds" .)