My azalea flowers never last more than a few days in spring. Then they cling to the plants and turn brown. Why?

Wet weather in spring often results in serious damage from a fungus disease called azalea petal blight. Apply a fungicide labeled for petal blight just as the petals begin to show color. If treated at the right time, and if temperatures are not too hot, the blossoms may last as long as three weeks and will drop off the plant instead of turning brown and mushy.