The word viticultures is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 22
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (36 words)
clitter, cluster, clutter, cultist, culture, culvert, cursive, cutlets, cutters, elicits, elitist, litters, lucites, lustier, lutites, retilts, revisit, revuist, rivulet, rutiles, scuttle, siltier, slitter, sluicer, stilter, stivier, surveil, tilters, trisect, trivets, turtles, utilise, uveitis, virtues, vittles, vulture