( Then ( ( the seed ) ( ( grows ( into ( a plant ) ) ) . ) ) )
(ROOT (S (RB Then) (NP (DT the) (NN seed)) (VP (VBZ grows) (PP (IN into) (NP (DT a) (NN plant)))) (. .)))
Then the seed grows into a plant.
(ROOT (S (NP (JJ Heirloom) (NNS seeds)) (VP (VBP come) (PP (IN from) (NP (NP (NNS plants)) (SBAR (WHNP (WDT that)) (S (VP (VBD were) (ADVP (RB traditionally)) (VP (VBN grown) (PP (IN in) (NP (JJ human) (NNS populations))))))))) (, ,) (ADJP (RB as) (VBN opposed) (PP (TO to) (NP (NP (DT the) (NNS seeds)) (VP (VBN used) (PP (IN for) (NP (JJ large-scale) (JJ agricultural) (NN production)))))))) (. .)))