( Water ( ( ( the soil ) as ) ( ( needed ( to ( keep ( it moist ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Water)) (ADVP (NP (DT the) (NN soil)) (RB as)) (VP (VBD needed) (S (VP (TO to) (VP (VB keep) (S (NP (PRP it)) (ADJP (JJ moist))))))) (. .)))
Water the soil as needed to keep it moist.
(ROOT (S (NP (NNP Water) (NNS molds)) (ADVP (RB mostly)) (VP (VBP live) (PP (IN in) (NP (NN water) (CC or) (NN moist) (NN soil)))) (. .)))