I've never been a big fan of impatiens (they're too thirsty) but I am in the minority on that point. Impatiens are wildly popular annual flowers and a mainstay of garden centers. As Bob Heffernan, executive director of the Connecticut Nursery and Landscape Association, recently pointed out, "People have relied on impatiens for decades to brighten the monotonous green Connecticut landscape." But no more. "Nursery production is way down," he said. "Growers can't take the chance."