Q.Black Edges Around New Foliage??
the black edges around new foliage occurs in spring on some sections of an otherwise buetiful mature (30+ year old) Lems Monarch. Cause…Remedy?? Read more at Gardening Know How: Ask A Gardening Question https://questions.gardeningknowhow.com/ask-a-question
Certified GKH Gardening Expert
Though they are not unusually susceptible to infections, they can occur. Unfortunately, your photos did not come through so I am unable to confirm.
You may want to treat with a fungicide. This article will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
Here is a collection of articles that will help you with the care of These shrubs:
https://www.gardeningknowhow.com/ornamental/shrubs/rhododendron
https://www.gardeningknowhow.com/ornamental/shrubs/rhododendron
