My Allium flowers started out good this year, then the stalk just below the flower turned brown and withered. This then caused the flower to fall over turn brown and die. I dug up a bulb and it looked fine. They haven't been recieving too much water which was one idea I had suggested. The friend who gave them to me, hers are fine this year. Mine did great last year. It just started this year. Does anyone have any ideas?