Dave Poole wrote:

It definitely has the look of a young seedling about it. I've grown
quite a few hundred over the years and everything smacks of a juvenile
plant. I think we ought to clarify a few things. The plant is a
young Rhododendron that has been nibbled by vine weevil and is in the
very early stages of chlorosis - possibly caused by a very slightly
alkaline soil.

Wouldn't you say potash would therefore help the cholorosis?