Plants from Earth carried by old lunar modules (9)
I believe the answer is:
oleanders
'plants' is the definition.
The answer is an example.
'earth carried by old lunar modules' is the wordplay.
'earth' becomes 'E'.
'carried by' is an insertion indicator.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'lunar modules' becomes 'landers' (I can't explain this - if you can you should believe this answer much more).
'o'+'landers'='olanders'
'e' inserted into 'olanders' is 'OLEANDERS'.
'from' is the link.
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" .)