I'm new to gardening as I only got a house with a garden back in April.
I have an azalea of the Blue Danube Evergreen variety, it's potted as we live in an alkaline soil area. It's potted in Ericaceous compost, in a pot with a lot of drainage media in the bottom, we only ever water it with rain water (from our butt if it's dry) and during flowering fed it with specific azalea feed (miracle gro).
We don't let it dry out but we don't soak it either.
Just these past few days it has started to go brown and wilt. I have no idea what is wrong despite extensive googling.
Any assistance gratefully appreciated!