County reduced planting locations (4)
I believe the answer is:
beds
This might be a double definition.
'county reduced' is the first definition.
(abbreviation for Bedfordshire; 'reduced' indicates an abbreviation)
'planting locations' is the second definition.
'beds' can be an answer for 'locations' (bed is a kind of location). I am not certain of the 'planting' bit.
Can you help me to learn more?
(Other definitions for beds that I've seen before include "Garden plots - English county (abbr)" , "area that includes Luton" , "Cots, bunks etc -- eastern English county (abbr)" , "Place" , "Graduate teacher's" .)