Archive for the ‘Hemlock adelgid’ Category

Some Conifers Don’t Like Summer Heat And Clay Soils

Most conifers are best grown in deep, moist, well-drained, acidic loamy soils and in full sun. In the deep South evergreen conifers are challenged by warm soils, poor soil drainage, and humidity. Humidity increases their susceptibility to diseases. Once established they are drought tolerant, but most fail in poorly drained wet soils. Many pine species […]

Pest Alert: Deep Freeze Negatively Impacts Hemlock Adelgid Populations in the Smokies

GOOD NEWS! The recent cold snap is having a negative impact on the invasive hemlock wooly adelgids in the Smokies. Since 2002 this insect has killed millions of hemlock trees in the U.S. Biologists in the Great Smoky Mountains report that the recent spell of frigid temperatures has killed off overwintering hemlock adelgids. Over 15 […]

Pest Update – More Pesticide Options for Hemlock Adelgid Control

Twenty years ago predictions of the demise of our native Canadian (Tsuga canadensis) and Carolina hemlocks (T. carolina) from home and commercial landscapes turned out to be incorrect. The key reason was the effectiveness of the insecticide Imidacloprid®. This product is licensed by Bayer AG, and is found in a number of lawn and garden […]