Hi, I live in Central Florida, and my azaleas have never bloomed very much. I see azaleas all over town covered in blooms, and mine have had about five.
The azaleas are on the south side of the house, and they get plenty of morning sun. I had the soil pH checked last year, and it was about 5.5. This could be because it is so close to the foundation, and it is seeping into the soil. I added azalea fertilizer a couple times last year. They get water about twice a week fall through spring and three times a week in summer. I have always mulched them with leaves (mostly oak), and last week I applied my first-ever batch of home-made compost. They are pretty bushy, and I wonder if thinning them would help. I pruned them last June. I always heard August is the cutoff point, but maybe it was too late.
I believe these azaleas are about 30 years old. My family moved into this house in 1985, and they were neglected until I took up gardening in 1995. We've never had much luck getting them to bloom, but they look so much healthier than before, and I am quite fond of them.
Thanks for any help!