Continuing the British film industry's near-pathological obsession with reworking The Full Monty, Greenfingers tells the unlikely tale of a genial gang of incarcerated felons who take up gardening and become the toast of the Hampton Court Palace Flower Show. It was allegedly inspired by a true story, but the plotline's implausibility leaves enough wiggle room in "inspired" to comfortably house an airport hangar. The action takes place at Edgewater Open Prison, an experimental facility that eschews the high walls and gray, concrete cellblocks of a regular prison for comfortable living spaces, minimal security, and acres of unpatrolled landscape. Inmates are selected for their potential to rehabilitate, then given responsibilities that will improve their employment prospects once they reenter society. Among the sweet-minded, chaste-tongued murderers and rapists is Clive Owen (Croupier), a reserved convict who wants to quietly ride out his sentence for accidentally killing his brother. But when he discovers he has a green thumb, Owen and a motley group of brutes, including his grizzled roommate (David Kelly, of Waking Ned Devine fame), plant a garden on the seemingly barren grounds. Their success attracts the attention and support of famed horticulturist Helen Mirren and her daughter Natasha Little, the obligatory love interest. While it's unfair to expect Greenfingers to capture prison life with astonishing verisimilitude, writer-director Joel Hershman goes to spectacular lengths to soft-pedal his convicts' violent histories and behavior. Proof that virtually any subject can be turned into feel-good pap, the film coasts along on singalong montages (including one to Tears For Fears' helpful "Sowing The Seeds Of Love") and obvious jokes about muscled thugs and squirrelly lowlifes discussing the finer points of daisies, bluebells, and tulips. And, as if that's not heartwarming enough, Hershman also pulls off an emotional hat trick with subplots about triumph over adversity, the redemptive power of love, and an lovable old man on chemotherapy. Greenfingers is harmless and forgettable at best, but it's inspired more by successful formulas than by anything approaching real life.