trees

Studies have shown that trees benefit our mental and physical health. Spending time around trees reduces stress and anxiety, lowers blood pressure, and improves mood. Simply viewing nature from a hospital window can speed recovery time. A study by the University of Michigan also revealed that...

For the first time ever, expert tree climbers with the Animal and Plant Health Inspection Service’s (APHIS) Asian Longhorned Beetle (ALB) Eradication Program trained fellow APHIS employees from another program on how to climb trees with a purpose.

Until now, only a single Harbison's hawthorn ( Crataegus harbisonii) tree was thought to exist in the wild, growing in the limestone soils of Percy Warner Park in Nashville, Tennessee.

Did you know that USDA has declared August as Tree Check Month? That’s because August is the peak time of year to spot the Asian longhorned beetle (ALB)—an invasive wood-boring beetle that attacks 12 types of hardwood trees in North America, such as maples, elms, horse chestnuts, birches and willows...

Humans adores trees. But humans also migrate and trade, habits that led to the accidental introduction of insects and diseases that harm trees and alter the landscape. Examples are easy to find and may be outside your front door: American elms that once dotted streets across America succumbed to...

When it comes to ridding the earth of pollution leaking from dumps, closed landfills, and other waste sites, specific types of trees are quietly and efficiently absorbing the toxins.

Why are Rocky Mountain Research Station scientists sampling tree rings in the Pinaleño Mountains of southeast Arizona? Because tree ring samples reveal the history of fire. When fire scorches a tree, the tree floods its wound with sap, which protects the wound from wood rot decay for hundreds of...

2018 was another record year of hurricanes and fires, which have inflicted huge economic losses to timber landowners as well as homeowners with landscape trees.

Immobile and long-lived, trees endure extreme weather, fires, and pests for tens, hundreds, and even thousands of years. In Fishlake National Forest, Utah, there is a quaking aspen colony spanning 106 acres that is roughly 80,000 years old. To give you a sense of scale, if the average human lives 79...

April may be Invasive Plant Pest and Disease Awareness Month, but I live it year-round. I spend my days with a team of fellow tree climbers, looking for signs of Asian Longhorned Beetle (ALB) damage in the treetops of Bethel, Ohio. This is where ALB damage is most evident – oftentimes not visible...