Q.2 Springs In A Row; Sections Of My Weigelas Are Dead.
Live in Chicago area. have 2 Sonic Blooms & 1 Wine/Roses. last 2 winters were average to mild. Have Hydrangeas planted in between and come back beautiful each spring. Is there a particular nutrient the Weigelas depend on? Wine/Roses is older. I have done a rejuvenation prune 2 times has come back beautiful. Can’t figure out what’s happening to just the Weigelas last 2 winters.

Certified GKH Gardening Expert
A Weigela will not do well where a hydrangea will, unfortunately. They need much more sun than a hydrangea will.
This article will help you to know what care that these shrubs require:
https://www.gardeningknowhow.com/ornamental/shrubs/weigela/growing-weigela.htm