Weeds, possibly, in Kew? (7)
I believe the answer is:
gardens
'weeds' is the definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Maybe you can see an association between them that I don't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for gardens that I've seen before include "In which you find weeds" , "Personal plots of ground" , "Park" , "Cultivated grounds" , "Ornamental grounds" .)