Petoonias Spitoonias,"" Carlos said when the occupants of the New House on 94th Street planted flowers in their areaway. No one blames Carlos when the ensuing Battle of the Petunia Petals reduces the garden to dirty disorder. After all, rich people should have sense enough not to show off by moving right in among the poor. But Carlos' grandmother forces him to apologize and Mrs Mitchell, the New Lady, offered him the job of guardian of the flowers at a quarter a week. Anticipating the jeers of Angel Andi and the Big Kings, Carlos accepts with reluctance. He handles Angel and the other kids with protection payoffs of candy bought with his earnings. When Mr. Mitchell suggests transplanting some of the seedlings into window boxes for the boys, Carlos gets his Big Idea. He and his brother and his cousin canvass the block, taking orders for window boxes painted and planted to order. The sale is a success, but Carlos' figuring is not: he winds up with a big deficit. To make up the difference, Carlos organizes the 94th Street Bazaar and everyone pitches in to help. The Bazaar is a success, the window boxes flourish, and the Times covers the story. A smooth style, lively dialogue and appealing illustrations enrich this obvious plot of Community Action.