This deadly fungus has invaded the neighborhood. My back door neighbor had to take down an avocado tree this past weekend. We first noticed the decline about 6 weeks ago & at first couldn't figure out the cause. I am a Master Gardener & at our Sept. meeting, our Horticulture Agent did a program on this terminal disease. The trunk was covered with tiny white tubes, about 1" long, of sawdust & excrement showing where the bark beetle entered.
A state Ag. agent came here, to St. Cloud, from Winter Haven, to check it out. The preferred method of disposal is burning but that is not allowed here in the city. The tree was cut up and taken to the solid waste dump to be covered with soil. There is concern that this fungus could destroy S. Florida's $30 million-a-year crop. Keep watch for this pest.