Hi nui
All weeds are functional components in Nature. Only human ignorance make them 'weeds'. In my view, we should try to 'weed' out our ignorance first. Human vanity (moha+tanha) in wanting to 'see' beauty in human ways (nice lawns, unmixed compositions. one/mono-culture at one place etc.) once understood can lead to 'real freedom' to see Nature as it is (beautiful)!
;-)