I recently purchased a Lc. Purple Cascade 'Fragrant Beauty' from Hausermann's. A few days ago, I noticed a strange discoloration on one of the leaves. A few of the "healthy" leaves also have this discoloration, but the leaf that has the most spots has started yellowing today. I'm hoping it's not a viral infection, but would like confirmation before I further pursue this with Hausermann's. Thanks!
Edit: The sphagnum moss seen in the pictures is only used as a top dressing. It is planted in coarse fir bark.