Suites are composed for parts of flowers (9)
I believe the answer is:
estuaries
'parts of flowers' is the definition.
The answer and definition can be both natural objects as well as being plural nouns.
Maybe you can see a link between them that I don't see?
'suites are composed' is the wordplay.
'composed' indicates anagramming the letters.
'suites'+'are'='suitesare'
'suitesare' anagrammed gives 'ESTUARIES'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for estuaries that I've seen before include "Broad mouths of rivers" , "coastal features" , "Tidal river mouths" .)