Stop Invasive Species

Moving firewood can bring invasive pests and disease to the campsites you love. Find out more about these devastating pests!

The Polyphagous Shot Hole Borer (PSHB) is an invasive wood-boring beetle that attacks dozens of tree species in Southern California, including commercial avocado groves, common landscape trees, and native species in urban and wildland environments.

PSHB spreads a disease called Fusarium Dieback (FD), which is caused by pathogenic fungi. Trees that are FD-susceptible may experience branch dieback, canopy loss, and, in some cases, tree mortality.

Visit the Polyphagous Shot Hole Borer Website...

Goldspotted oak borer (GSOB) Agrilus auroguttatus is an invasive pest contributing to the on-going oak tree mortality occurring on federal, state, private, and local Native American lands in many areas of San Diego County. Isolated areas of infestation have been confirmed in Riverside, Orange and Los Angeles Counties in southern California.

Visit the Goldspotted Oak Borer Website...

Sudden Oak Death is a tree disease caused by the plant pathogen Phytophthora ramorum. The disease kills some oak species and has had devastating effects on forests in California and Oregon.

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Pitch Canker is a disease that causes die-back of individual pine branches, leading to a general decline in tree health, and, in some cases, premature death. This disease mainly affects pine trees in central coastal areas of California.

Download Frequently Asked Questions about Pitch Canker...

This insect was introduced into North America sometime in the 1990's. It was first reported killing ash (genus Fraxinus) trees in the Detroit and Windsor areas in 2002. Since then, infestations have been found throughout lower Michigan, Ohio, northern Indiana, the Chicago area, Maryland, and recently in Pennsylvania.

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The Asian longhorned beetle, or ALB, is an invasive insect that feeds on a wide variety of trees in the United States, eventually killing them. The beetle is native to China and the Korean Peninsula and is in the wood-boring beetle family Cerambycidae. Adult beetles are large, distinctive-looking insects measuring 1 to 1.5 inches in length with long antennae. Their bodies are black with small white spots, and their antennae are banded in black and white. Checking your trees regularly for this insect and looking for the damage it causes and reporting any sightings can help prevent the spread of the beetle.

Visit USDA's Asian Longhorned Beetle Website...

Pests and pathogens can be spread via the transport of unprocessed logs and other wood products to woodworkers, lumber and veneer mills, or other user groups. An outbreak of laurel wilt was linked to the transportation of infested redbay wood by an amateur woodworker. Thousand cankers disease, which infects black walnut, has been accidentally introduced several places via the woodworking and veneer industries.

Download Risk of Invasive Species Movement on Wood Products Other Than Firewood...