I have a gorgeous flowering Weigela bush that is in a sunny spot and has grown and blossomed for several years. This spring, however, it seems to be dying. About 80% of the branches never got leaves and look dead. There is a branch here and there that has leaves and one or two of them actually got flowers. Any idea what may have caused this? Do I need to dig it up and buy a new one, or can I do something to save this one?
Your weigela is probably still suffering the effects of a hard winter. You should be able to revive it with pruning and patience. Here are some tips on pruning: https://www.gardeningknowhow.com/ornamental/shrubs/weigela/pruning-weigela.htm