Most Daffodil varieties naturalize and become larger and larger clumps, blooming for generations and according to studies, Daffodils can outlast any human as long as their grown under good conditions. But they can sometimes stop blooming for a specific reason and when they do, it's called ‘going blind'. One good reason for them not blooming is if you plant them at a wrong depth. Another factor is impatience regarding the cutting of its leaves, and also the presence of narcissus flies that eats the flower buds.

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Source: The Spruce