Daphne has died back
We have a Daphne bush next to a fence. The side near the fence has died back, although some buds have opened. What is the cause?
I can suggest a few things for you to look for -- damage on a main stem on the side near the fence could cause die back; someone spraying herbicide on the other property which could have blown over to your side; the plant may simply have run its course. This article may shed some light on the problem: https://www.gardeningknowhow.com/ornamental/shrubs/winter-daphne/care-for-winter-daphne.htm