This oafish and perfunctory bit of fiddle-faddle traces a revolt of the vegetable kingdom in one of those sleepy little English villages dear to the suburban Yankee imagination. In a summer of weirdly luxuriant fruitfulness, a huge marrow squash appears in Charlie Crump's garden and Mabel Crewe's roses start ""biting"" her when she tries to prune them and gradually it becomes dear that quiet little Brandling has been chosen to answer for the ecological sins of mankind. Among McKenney's more dismal inventions are an elderly fount of folk wisdom given to dire warnings about what we've done to ""the creatures of the field"" and an oracular seven-year-old whose eyes, at climactic moments, are. ""full of an ancient, infinite wisdom."" A promising entry in this season's Underestimation of Public Intelligence sweepstakes.