Borders can be grand with seed scattered around (5)
I believe the answer is:
edges
'borders' is the definition.
(an edge is a border or margin)
'grand with seed scattered around' is the wordplay.
'grand' becomes 'g' (G is short for grand as in a thousand).
'with' is a charade indicator (letters next to each other).
'scattered around' indicates anagramming the letters (I've seen this in other clues).
'g' put after 'seed' is 'seedg'.
'seedg' with letters rearranged gives 'EDGES'.
'can be' is the link.
(Other definitions for edges that I've seen before include "Bounds" , "Borders, rims" , "They're used for cutting" , "Outside limits" , "Margins" .)