I got this beautiful Calla Lilly two weeks ago, and just a couple of days after repotting it the bottom leaves started wilting. Some of the leaves on top are also starting to brown. I read up on the internet and it said that it could be getting too much nitrogen fertilizer. I haven't fertilized the plant at all. I reported it in all purpose potting soil. It shouldn't be dying of too much water also because I water all of my plants the same amount and I've never had one die of over watering and one has never came close to underwatering.