Asian Longhorned Beetle

Asian longhorned beetle. Credit: U.S. Department of Agriculture

Forests are under attack from invasive species, diseases and unprecedented outbreak of pests, while trying to withstand stress caused by climate change and drought. The Midwest is fighting is the invasive species emerald ash borer, which is killing tens of millions of ash trees. New England has seen tens of thousands of trees succumb to the Asian longhorned beetle, which, if it spreads, is estimated to be able to destroy 30 percent of the country’s hardwoods. In the West, millions of trees are being lost to the combined threat of mountain pine beetles and white pine blister rust. Cities across the country have lost tens of thousands of elm trees to Dutch elm disease over the last 60 years. Developing strong management and restoration plans is essential to protecting our forests from invasives, disease and pests.

Our Strategy

Each threat to forests requires us to take a unique approach to solving it.

Through American Forests Global ReLeaf, we work to replant trees, including disease-resistant trees, in areas harmed by disease, insects and more.

A mountain pine beetle excavating a tunnel in a ponderosa pine

A mountain pine beetle excavating a tunnel in a ponderosa pine. Credit: Whitney Cranshaw, Colorado State University,

Meanwhile, our Endangered Western Forests initiative is helping fight myriad threats to our western forests by planting disease-resistant trees, applying insect-repelling pheromone patches to trees, developing new management plans and more.

Injecting an ash tree to protect against EAB

Injecting an ash tree to protect against emerald ash borer. Credit: David Cappaert, Michigan State University/

Other issues can be addressed more efficiently through policy than field work by trying to prevent future problems, as well as fixing current ones. This approach has led to our efforts in advocating for sustainable forest management, economic incentives for landowners to keep their property forested, and recognition of forests as water resources.

Take Action

Visit American Forests’ Action Center to send pre-written letters to Congress and other representatives to support sound wildfire policy. Letters available now include:

donate_editDonate to American Forests to support our work, like our efforts to protect forests from the threats they face.



Forest Threats News from our Loose Leaf blog

The Fungus Eating the West

by Susan Laszewski

It’s National Invasive Species Awareness Week, and here at American Forests, we’re all-too-aware of the havoc that invasive species can wreak on our native ecosystems.

Other invasives may lack catchy nicknames, but are no less harmful. American Forests has been working to spread awareness of one invasive with a lower profile: the fungus Cronartium ribicola — cause of the deadly white pine blister rust affecting the American We... (Read More)

EAB Goes Global

by Susan Laszewski
An adult emerald ash borer feeding on a leaf.

The beautiful, but deadly, emerald ash borer (EAB) doesn’t look to be slowing down. In fact, this army of tree pests is taking its attack on ash trees global.

Last month, four Russian scientists — three from Moscow and one from Siberia — paid a visit to the U.S. to learn more about a pest that has recently become all-too-familiar to them. Yury Ivanovich Gninenko and Yulia Anatolievna Sergeeva, researchers in forest protection ... (Read More)

More Than a Paper Tiger

by Susan Laszewski
Sumatran tiger.

Having worked in Indonesia with The Orangutan Information Centre (OIC), Gunung Leuser National Park and the Farmer Guardians of Leuser to restore areas of illegally converted protected forest, we’re happy to hear the news. According to Orangutan Foundation International, Indonesia is home to 10 percent of the world’s remaining rainforests and is one of the five most species-diverse countries in the world. Such a biodiversity hot-spot h... (Read More)