Your daffodils are experiencing bud blast, which can happen when the weather warms up too quickly. If it's the weather's fault, you are of course powerless. But if your daffs haven't been divided in a while, that could be contributing to the blasting. Make sure you divide them every few years in fall, and separate any baby bulbs from the mother plant while you do it. As to the lily of the valley, it is not suited to your very warm Zone 9. You couldn't possibly keep it wet enough to thrive there.