That's a good point, the soil was rich in the gardens where I grew Professor Einstein.
I was just looking through photos from this past spring and couldn't find any recent ones of Barrett Browning. I finally remembered that we had a hard freeze just before the buds opened. Normally all the daffs deal with cold just fine, but it was colder than usual that time- single digits if I recall correctly. Oddly it was the stems that were damaged more than the blooms themselves.