The word landscapers 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™ Play In The Letters
Seven Letter Word Alert: (65 words)
adrenal, ancress, arcades, arsenal, ascends, caldera, canapes, canards, candela, candler, candles, capless, carless, carpals, carpels, clasped, clasper, classed, cradles, dancers, declass, enclasp, enlards, escarps, lancers, landers, napless, palaces, panders, parades, parcels, parsecs, pascals, placard, placers, planers, pranced, prances, rascals, reclads, reclasp, reclass, replans, resands, rescans, resnaps, respans, sacrals, sandals, sanders, sarapes, scalars, scalers, scalped, scalper, scandal, scarped, scleras, scraped, scrapes, slander, snarled, spacers, spaders, spreads