( Weeds ( ( ( are usually ) ( described ( as ( ( any plants ) ( growing ( where ( they ( ( are not ) wanted ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Weeds)) (VP (VBP are) (ADVP (RB usually)) (VP (VBN described) (PP (IN as) (S (NP (DT any) (NNS plants)) (VP (VBG growing) (SBAR (WHADVP (WRB where)) (S (NP (PRP they)) (VP (VBP are) (RB not) (VP (VBN wanted)))))))))) (. .)))
Weeds are usually described as any plants growing where they are not wanted.
(ROOT (S (NP (NP (NNS Plants)) (SBAR (WHNP (WDT that)) (S (VP (VBP grow) (SBAR (WHADVP (WRB where)) (S (NP (PRP you)) (VP (VBP do) (RB n't) (VP (VB want) (NP (PRP them)))))))))) (VP (VBP are) (VP (VBN called) (NP (NNS weeds)))) (. .)))