I was reading notes from a study that was done in New England on how excess nitrogen in rain water has changed the appearance of the Northern Pitcher plant. The study was done by the University of Vermont and Harvard. It was stated that more reactive nitrogen is circulating in the environment mainly from the production of synthetic fertilizers and burning of fossil fuels in the Midwest and because of this Northern Pitchers are producing fewer pitcher-shaped leaves and growing more flat leaves for photosynthesis. I will have start looking closer now that I am aware of a possible problem. Has anyone noticed a change in the appearance of these plants in our area?