( ( ( ( ( Marigolds ( reproduce ( by seeds ) ) ) , ) and ) ( they ( 're ( easy ( to ( ( plant and ) grow ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Marigolds)) (VP (VB reproduce) (PP (IN by) (NP (NNS seeds))))) (, ,) (CC and) (S (NP (PRP they)) (VP (VBP 're) (ADJP (JJ easy) (S (VP (TO to) (VP (VB plant) (CC and) (VB grow))))))) (. .)))
Marigolds reproduce by seeds, and they're easy to plant and grow.
(ROOT (S (NP (NP (VBG Growing)) (CC and) (NP (NN reproducing))) (VP (VBP occur) (PP (IN in) (NP (DT both) (NNS plants) (CC and) (NNS humans)))) (. .)))
Growing and reproducing occur in both plants and humans.