Garden centre in Surrey, busy after noon (7)
I believe the answer is:
nursery
'garden centre' is the definition.
(I've seen this before)
'surrey busy after noon' is the wordplay.
'busy' indicates anagramming the letters.
'after' says to put letters next to each other.
'noon' becomes 'n' (**).
'surrey' with letters rearranged gives 'ursery'.
'ursery' after 'n' is 'NURSERY'.
'in' acts as a link.
(Other definitions for nursery that I've seen before include "place to find new plants" , "Where plants are grown commercially" , "Establishment for plant cultivation" , "An area of cultivation" , "Where young plants grow up?" .)