Tree god with maiden in place of retreat (6)
I believe the answer is:
ashram
'place of retreat' is the definition.
(Asian religious retreat)
'tree god with maiden' is the wordplay.
'tree' becomes 'ash' (ash is a kind of tree).
'god' becomes 'ra' (Egyptian god).
'with' is a charade indicator (letters next to each other).
'maiden' becomes 'm' (cricket abbreviation).
'ash'+'ra'+'m'='ASHRAM'
'in' acts as a link.
(Other definitions for ashram that I've seen before include "spiritual centre?" , "Retreat -- a marsh (anag)" , "Hindu place of retreat" , "Hindu hermitage" , "Hindu place of religious learning located in a marsh" .)