Home > Great Big Greenhouse Blog > June 2013 > GARDEN TALK with DOUG - Of All the Gall

GARDEN TALK with DOUG - Of All the Gall

Because of this year’s cool, wet spring season, many customers are beginning to come into the nursery with samples of fungus problems on their plants.  Some of the more common samples are with black spot on rose leaves, black spot on hydrangea leaves, and powdery mildew on crape myrtle and summer phlox leaves.  All these fungus problems are very common this time of year with all the rainfall we have experienced lately. Azalea leaf gall is just another common fungus issue. Azalea leaf gall is characterized by hard, fleshy, severely distorted, abnormal swelling of leaves on azaleas.  Azalea leaf gall is not an insect problem but a fungus problem.

            The best method of control is to remove the leaf galls by hand when they are first noticed and dispose of them.  Don’t pick off the gall and leave on the ground.  If the azalea leaf gall remains on the plant, then it becomes a source of fungus spores the next season.  Fungicides do little to help, especially after the gall has become obvious.

            This fungus disease is not only unsightly, but reduces the ability of the azalea plant to produce flowers in the future if not under control.

            The good news is that with a little care and maintenance, your azaleas should not be too badly damaged.

Posted: 6/17/2013 by Doug Hensel | with 0 comment(s)
Filed under: DougHensel, GardenTalkWithDoug
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