( They ( ( ( grow best ) ( ( in ( full sunlight ) ) ( and ( well ( drained soils ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP grow) (PRT (RBS best)) (UCP (PP (IN in) (NP (JJ full) (NN sunlight))) (CC and) (ADVP (RB well)) (VP (VBN drained) (NP (NNS soils))))) (. .)))
They grow best in full sunlight and well drained soils.
(ROOT (S (NP (NNP Gravitropism)) (VP (VBZ ensures) (SBAR (SBAR (IN that) (S (NP (NNS roots)) (VP (VBP grow) (PP (IN into) (NP (DT the) (NN soil)))))) (CC and) (SBAR (IN that) (S (NP (NNS shoots)) (VP (VBP grow) (PP (IN toward) (NP (NN sunlight)))))))) (. .)))