I moved a large old buddleia 2 years ago. It was doing well, but last year it did not flower, the leaves turned yellow and it didn't grow much.
This year it hasn't grown much again, no flowering visible and a hard yellow canker of some kind covering the stems. Leaves are turning yellow as well.
There is some new growth, it's the previous years growth that's turning yellow. I did have ornamental poppies around it, which I have pulled up because they went yellow and blotchy.
Can anyone tell me please what this yellow crusty canker might be and what I should do. I also have a couple of gooseberry bushes close by as well. Could these be causing disease. The buddleia was very healthy before i moved it.