Hi Peter,We have some rhododendron that has been doing great for 30 years. Now 1 section looks like they do when it is very cold out (droopy, schrivled up) . I read something about root weevils doing damage . I dont know what is going on . I can send pics if you want.Thanks, Bill3/19/19
You could send pictures to peterb@hewitts.com In the meantime HERE”S A LINK to a great resource to help you figure out what the problem might be. https://www.glendoick.com/Rhododendron-Problems