Pests and Diseases

When you hear their distinctive hammering outside your window, it’s natural to wonder if woodpeckers cause damage to trees. Generally, woodpeckers rarely cause serious damage to trees. However, their visits

The Preservation Society of Newport County has enlisted Bartlett Tree Experts to help protect its historic and valued beech trees. Earlier this summer, research scientists at the Bartlett Tree Research

Spotted lanternfly (Lycorma delicatula) is an invasive insect pest that has few natural predators in the U.S. This insect spreads quickly and can damage a variety of plants and trees,

Crape myrtle bark scale is a serious pest of crape myrtle, or crepe myrtle, trees. As the pests feed on new growth, tree branches begin to die. Flowering is reduced

Research scientists at the Bartlett Tree Research Laboratories – the research arm of Bartlett Tree Experts – have broken new ground to protect beech trees by developing novel Integrated Pest

When you see tree bark covered in crusty green stuff you may wonder, does lichen impact trees? Don’t panic! It’s unlikely that the ‘green stuff’ is harming the tree. Lichens

Unusual is one of the best way to describe tree galls. You can find these abnormal plant growths on leaves, twigs, and branches. They come in a range of different

Roses are one of the most popular garden plants in the world. In caring for roses, it’s important to understand the best conditions for growing them. A working knowledge of

Beech leaf disease (BLD) is an emerging disease caused by a nematode, or microscopic worm. We often don’t think of our trees as getting “sick.” However, just as people can

Tree borers and wood boring insects make their homes in the bark, trunks and branches of trees.  Living up to their name, these larvae ‘bore’ in trees, laying eggs and

Mites are tiny arachnids that feed on chlorophyll, the substance that gives plants their lovely green color. They are related to ticks and spiders, but feed on trees and shrubs.

Boxwoods are a staple in many landscapes.  These ornamental, evergreen favorites make excellent hedges or edging, but can also serve as foundation plants. However, this popular plant is not without

We often think of spring and summer as prime time for insects — and it is. But, you know Mother Nature. She never follows the rules completely. With that, there

The USDA recently confirmed the presence of emerald ash borer in Oregon. EAB for short, this invasive wood-boring beetle infests and kills ash trees. The beetles lay eggs in the

We all know what healthy leaves look like, but what happens when they’re not healthy? Leaves can become discolored, have bumps or brown or red lesions. Smudgy spots on foliage