Shrubs that could be provided by dealer and son (9)
I believe the answer is:
oleanders
'shrubs' is the definition.
The answer and definition can be both plants as well as being plural nouns.
Maybe they are linked in a way I don't understand?
'that could be provided by dealer and son' is the wordplay.
'that' becomes 'o' (I can't explain this - if you can you should give a lot more credence to this answer).
'could be' indicates an anagram.
'provided by' means one lot of letters go next to another.
'and' becomes 'n' (common abbreviation for 'and').
'son' becomes 's' (genealogical abbreviation for son).
'dealer' after 'n' is 'ndealer'.
'ndealer' anagrammed gives 'leander'.
'o'+'leander'+'s'='OLEANDERS'
Can you help me to learn more?
(Other definitions for oleanders that I've seen before include "See Arnold about these flowering shrubs" , "Evergreen shrubs" .)