My azaleas have yellow leaves with black specks on the back. Why is this and what can I do about it?

A lot of people are bringing in branches with yellow leaves. A lot of people think this is due to too much water, but if you turn the leaf over and see black spots, it's last year's damage from lace bug. They'll just fall off, you should dispose of these fallen leaves. Lace bugs usually attack azaleas that are planted in full sun.

Actually azaleas are woodland plants, they should be planted in areas with morning sun only. They are more susceptible to lace bug because they're out in the sun.