Names changed, including individual plants (8)
I believe the answer is:
anemones
'plants' is the definition.
(anemone is a kind of plant)
'names changed including individual' is the wordplay.
'changed' indicates anagramming the letters.
'including' means one lot of letters goes inside another.
'individual' becomes 'one' (an individual is one person).
'names' with letters rearranged gives 'anems'.
'anems' enclosing 'one' is 'ANEMONES'.
(Other definitions for anemones that I've seen before include "Sane omen for sea creatures" , "bloomers" , "Mean nose (anag.)" , "No enemas for these flowers" , "One means these flowers, oddly" .)