Interesting theory, Polly. I have quite a lot of daffs spread out around here. I was hoping it would help deter the deer too. I always seem to have some damage (annoying, yes) but not nearly what I used to get. Glad you little experiment is showing promise. Daffs are really quite lovely in their own right too. You can get quite a variety out there these days and Lisa also had some very neat ones, which is how I started on them.