Run-back on sets of programs for little children and gardeners (9)
I believe the answer is:
nurseries
'little children and gardeners' is the definition.
I can't judge whether this defines the answer.
'run-back on sets of programs' is the wordplay.
'back' is a reversal indicator.
'on' is a charade indicator (letters next to each other).
'sets of programs' becomes 'series' (I can't justify this - if you can you should believe this answer much more).
'run' in reverse letter order is 'nur'.
'nur'+'series'='NURSERIES'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for nurseries that I've seen before include "For baby people and baby plants" , "For young chuildren and young plants" , "Reinsures in places for growing trees" , "Rooms for very young children" , "races?" .)