Care about the Home Counties' line on cricket pitches (6)
I believe the answer is:
crease
'line on cricket pitches' is the definition.
(line a batsman stands on)
'care about the home counties'' is the wordplay.
'about' indicates an anagram.
'the home counties'' becomes 'SE' (Home Counties in the South East of England).
'care' is an anagram of 'crea'.
'crea'+'se'='CREASE'
(Other definitions for crease that I've seen before include "feature of smart trousers" , "Line produced by folding" , "Cricket line; wrinkle" , "Wrinkle or pressed line" , "Fold, maybe unmeant" .)