( ( ( ( Seeds ( will germinate ) ) but ) ( seedlings ( are slow-growing ) ) ) . )
(ROOT (S (S (NP (NNS Seeds)) (VP (MD will) (VP (VB germinate)))) (CC but) (S (NP (NNS seedlings)) (VP (VBP are) (ADJP (JJ slow-growing)))) (. .)))
Seeds will germinate but seedlings are slow-growing.
(ROOT (S (NP (NN Seed)) (ADVP (RB dormancy)) (VP (VBZ ensures) (SBAR (IN that) (S (NP (NNS seeds)) (VP (VBP germinate) (ADVP (RB only)) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS conditions)) (PP (IN for) (NP (JJ seedling) (NN survival)))) (VP (VBP are) (ADJP (JJ optimal))))))))) (. .)))