Azalea Leaves Turning Reddish-brown
Azalea leaves turning reddish-brown
Recommended products are Monterey Bi-Carb Old Fashioned Fungicide or Bayer Advanced Natria Disease Control. Also, Safer Garden Fungicide (Do not use this product when air temperatures are over 85 degrees or within a few weeks of an oil spray.) Another disease common to deciduous azaleas is azalea leaf gall.