I have some daffs that I planted just 2 years ago. They came up last year, the first spring and bloomed. This year they came up and no blooms. The foliage looks fine. I did not cut them back last year until mid June and I didn't fertilize or otherwise do anything to them. They are Carlton. I wish I knew why they aren't blooming because they are planted in a row along the front yard by the street.