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Insects and Diseases

Emerald Ash Borer

EAB: What to know and what to do Emerald ash borer (EAB), a destructive insect from Asia that attacks and kills ash trees, has significantly expanded its range in the First State, according to state plant health officials. In November of 2018,  additional detections of emerald ash borer were confirmed near Newark and Glasgow in …

Spotted Lanternfly

Guidelines for detection and reporting The spotted lanternfly – a destructive, invasive plant hopper attacks many hosts including grapes, apples, stone fruits, walnut, willow, and tree of heaven – has been confirmed in New Castle County. Delaware is the second state to have found the insect, which was first detected in Pennsylvania in 2014. This …