
Certified GKH Gardening Expert
They should be just fine. I would test the soil in the area. If it gets fertilized often, Then watch out for too much nitrogen in the soil. This will prevent uptake of phosphorus and potassium, which will keep it from blooming.
On the other hand. If you do not feed them often, then it could be that it is actually lacking in phosphorus and potassium. Feed with bloom formulas, or just something with high potassium and phosphorus. Otherwise, once you get them to bloom again, just use a fertilizer made for bulbs.
This article will offer a more detailed look at different ways to feed them:
https://www.gardeningknowhow.com/ornamental/bulbs/daffodil/fertilizing-daffodil-plants.htm