Q.Dying Pleached Elaeagnus Gilt Edge
This has been planted with several others that all seem to be thriving, this one seems to be dying back. All planted mid April 2021. It seems to be dying back, leaves changing colour. please can you let me know of possible reasons as we do not want to loose the others.
Certified GKH Gardening Expert
This resembles the conditions and looks of Verticillium Wilt. Controlling this, immediately, will be necessary. This article well help:
https://www.gardeningknowhow.com/plant-problems/disease/verticillium-wilt-treatment.htm
Here is an article that will help you with the care of the shrub:
https://www.gardeningknowhow.com/ornamental/shrubs/elaeagnus/how-to-grow-elaeagnus-limelight.htm