Tag Archives: ambrosia beetle

Granulate Ambrosia Beetles

Dr. Jason Oliver at the TSU Otis Floyd Nursery Research Center in McMinnville alerted us that they had caught a single granulate ambrosia beetle adult and two black stem borers in their ethyl alcohol baited trap when it was checked on Wednesday, March 18. As spring approaches, so too do the emergence of these pests as temperatures at or above 70 degrees F are conducive for ambrosia beetle activity. They primarily attack trees that are stressed and dormant, which many plants, especially if they were not irrigated last August through October could have been damaged by the flash drought. Often, these plants will not show signs of stress because of their dormancy. The granulate ambrosia beetle is an invasive pest from