Streetlights left on all night cause leaves to become so tough that insects cannot eat them, threatening the food chain, a study has found. “We noticed that, compared with natural ecosystems, tree ...

Safeguarding your trees against pests is important to their health and longevity. Invasive species can wreak havoc by defoliating or infecting trees, and left untreated, can lead to loss of limbs and ...

If you notice a substance that looks like ash or soot on your trees, it's likely not the result of a fire. Instead, you're ...

Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park discuss a tree-related topic from general care and planting tips to how ...

Scientists have planted American trees in China, Korea and elsewhere to attract hungry insects. Their hope is to identify the ...

This video is no longer available. Some bugs are OK, others are not, and the same goes for trees growing in the D.C. region. What should you be on the lookout for? During a walk-through at Patuxent ...

One type of apple insect control sprays should be applied shortly after the flower blossoms fall from the tree, according to ...

Climate-induced warming is fueling the proliferation of insects keen on invading Colorado’s forests and leaving the trees they devour for dead, a new report has found. After a wet and cool 2023, ...

Stop planting these 5 pest magnets near your patio — they’re guaranteed to ruin your summer.

With weather more favorable, and trees beginning to bud, now is when most landowners begin to take a step outdoors to assess ...

Michigan has 10 insects on its invasive species list. Many of these insects threaten trees and plants across the state. If you believe you have found one of these invasive insects, you can report it ...