Get men into reorganising plant (10)
I believe the answer is:
mignonette
'plant' is the definition.
(mignonette is a kind of plant)
'get men into reorganising' is the wordplay.
'reorganising' is an anagram indicator.
'get'+'men'+'into'='getmeninto'
'getmeninto' with letters rearranged gives 'MIGNONETTE'.
(Other definitions for mignonette that I've seen before include "Flower" , "One blooming" , "Fragrant plant" .)