I planted a dozen daffodils in two large pots on my patio and the leaves came up looking healthy, but when the stem for the bloom came up, the bloom just started to come out and turned brown before it opened. What did I do wrong?
Problem With Daffodils Blooming
This article has good information: https://www.gardeningknowhow.com/ornamental/bulbs/daffodil/daffodils-not-blooming.htm
However, it didn't address your question. I think your lack of bloom expansion could be weather related. At least that's what happened to our daffodils this year. As the buds were developing in the seath, we had really bad weather, and they just gave up. Don't cut the foliage until it starts to decline on its own. This feeds next years blooms.