Remove untidy vegetation (5)
I believe the answer is:
scrub
This might be a double definition.
'remove' is the first definition.
(scrub can mean to remove or delete)
'untidy vegetation' is the second definition.
'scrub' can be an answer for 'vegetation' (scrub is a kind of vegetation). I'm not certain of the 'untidy' bit.
Can you help me to learn more?
(Other definitions for scrub that I've seen before include "Abandon" , "Get rid of" , "plants" , "Wash the stunted shrub?" , "Powerful wash" .)