PLANTS MOST SUSCEPTIBLE: Oleander
Prevention: Inspect oleanders carefully prior to purchase, do not buy plants that have galls.
Management: Remove the galls by pruning several inches below. Treat each cut with 10% bleach solution. Dip pruning tools in a 10% bleach solution between EACH cut to reduce the possibility of spreading the bacteria. Bag and discard cuttings. Do not compost diseased plant material.
Prune during the dry seasons to avoid infection of wounds. Avoid sprinkler irrigation while pruning wounds are fresh.
Severe infection of large shrubs is difficult to control by selective pruning. Even if you cut down the entire shrub, the new succulent growth will still be extremely susceptible to infection. In certain situations, removal of the diseased plant and replanting may be the best method of control.
To learn more see University of Arizona Publication: az1124
Oleander Galls in the Low Desert
visitors since April 27, 1997