Key Takeaways Emerald ash borer (EAB) has killed the vast majority of untreated ash trees across the greater St. Louis region since it was first confirmed in Missouri, and infested trees that go untreated typically die within two to four years. Early-stage infestations, generally those affecting less than 30 to 50 percent of the canopy, […]

Continue reading from Emerald Ash Borer in St. Louis, MO: When to Treat or Remove Ash Trees