I didn't know people grew azaleas up there. I thought rhodendrons,
which appear to be much the same thing, were the norm.
We took out the existing azaleas, which were very small leafed and small
flowered, and replaced them with big bloomed formosa types that the gardener
got. So they are still pretty sparse, only having been in place about a
year and a half. There's room at their feet for something with
similar light and soil needs.