azalea leaf and flower gall

Azalea leaf and flower gall, caused by Exobasidium vaccinii, infects new leaf and flower buds forming swollen galls which may have a white dusting of spores in early infections, later turning brown and hard.

For more information on diagnosis, hosts, and management follow the link to the Online Guide to Plant Disease Control.

Partially galled azalea leaf

More fully formed leaf gall

Single leaf infection

More leaf infections

More pronounced galls

Healthy leaves near galled leaves

Fully formed galls

Partially galled leaves

Older gall with white sporulation