Raise in the garden, maybe as weeds (6)
I believe the answer is:
uproot
'garden maybe as weeds' is the definition.
I can't judge whether this definition defines the answer.
'raise in the' is the wordplay.
'raise' becomes 'up' (I've seen this in other clues).
'in the' becomes 'root' (I can't justify this - if you can you should believe this answer much more).
'up'+'root'='UPROOT'
Can you help me to learn more?
(Other definitions for uproot that I've seen before include "Completely destroy" , "Extirpate" , "Remove from the ground" , "Pull (plant) out of soil" , "Tear from ground or force to leave home" .)