Where fruit might turn red, if not green (7)
I believe the answer is:
orchard
'where fruit might turn red' is the definition.
I know that 'fruit' relates to this answer. I also know that both the answer and definition are singular nouns
'if not green' is the wordplay.
'if not' becomes 'or' (both can be said before introducing an alternative).
'green' becomes 'chard' (chard is a kind of green).
'or'+'chard'='ORCHARD'
Can you help me to learn more?
(Other definitions for orchard that I've seen before include "Field of fruit trees" , "Fruit grove" , "Where fruit trees are grown" , "land for fruit-growing" , "Place for abundant fruit" .)