Tree Pests: Emerald Ash Borer

NewMay 2018 November 2017

Emerald ash borer is an invasive, wood-boring insect that infests and kills native North American ash trees. Learn the signs, symptoms and management of EAB and how you can slow the spread on the University of Missouri Extension Tree Pests site.

Tree Pests: Gypsy Moth

NewNovember 2017 November 2017

Introduction

Gypsy moth (Lymantria dispar) is a destructive, exotic forest pest that was accidentally introduced into the United States in 1869 by a man hoping to mate them with silkworms to create a hardier, more productive silk-bearer.

Tree Pests: Native Pests

NewNovember 2017 November 2017

Introduction

In addition to all of the nonnative, invasive tree pests challenging the health of Missouri’s trees, there are several native insects and diseases that can cause serious harm.

Tree Pests: Asian Longhorned Beetle

NewNovember 2017 November 2017

Introduction

The invasive Asian longhorned beetle (ALB) hitchhiked to the United States nestled deep within hardwoods cut into crates and pallets and used to import goods from Asian countries.

Tree Pests: Thousand Cankers Disease

NewNovember 2017 November 2017

Introduction

Although not yet detected here, thousand cankers disease (TCD) is a potentially fatal disease of black walnut, caused by the walnut twig beetle (Pityophthorus juglandis) and an associated fungus (Geosmithia morbida).