Pieris problems

[Koren]

The pieris in my garden has developed small reddish brown spots along the edges of some leaves, not all, and the edges are turning yellow. Does anyone know what is wrong with the plant? Have checked out loads of diseases but it doesn't match anything so far!

[gardening_guru]

Dig the plant up, pot it up into a pot of ericaceous compost. Unless of course the garden soil is already of a low pH? A sheltered, shady site is ideal.