Yes, BLADDERWORTS is a Scrabble word!

Letter values in Scrabble US: B 3, L 1, A 1, D 2, D 2, E 1, R 1, W 4, O 1, R 1, T 1, S 1.

Is it a valid word?

BLADDERWORTS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

any of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animals