The word flowerpots 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: 20
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (26 words)
felwort, florets, flowers, footers, fowlers, looters, lowspot, petrols, plowers, plowter, poofers, poorest, reflows, replots, replows, respool, retools, spoofer, spooler, stooper, swooper, toolers, towrope, trowels, twofers, woofers