Greenery in meadow fine over time (7)
I believe the answer is:
leafage
'greenery' is the definition.
(I've seen this before)
'meadow fine over time' is the wordplay.
'meadow' becomes 'lea' (I've seen this before).
'fine' becomes 'f' (abbreviation).
'over' says to put letters next to each other.
'time' becomes 'age' (age is a kind of time).
'lea'+'f'+'age'='LEAFAGE'
'in' is the link.
(Other definitions for leafage that I've seen before include "Gala fee (anag)" , "Greenery" , "Foliage" , "marijuana, possibly" , "Green growth" .)