The word wildflowers 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
Seven Letter Word Alert: (23 words)
dollies, dowlier, dowries, fellows, fillers, flowers, folders, follies, fowlers, frilled, lowlier, refills, reflows, refolds, rowdies, rowwise, soldier, swilled, swiller, swirled, weirdos, widower, willows