The word silviculture 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: 23
Highest Scoring Words With Friends™ Play In The Letters silviculture
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Seven Letter Word Alert: (29 words)
cellist, cluster, culture, culvert, cursive, elicits, illites, lucites, lustier, retills, revisit, revuist, rillets, rivulet, rutiles, silicle, sillier, siltier, sluicer, stiller, stivier, surveil, tillers, trellis, utilise, uveitis, virtues, vitelli, vulture