Illinois emerald Ash Borer Quarantine Expanded
Illinois has expanded its quarantine zone for the emerald ash borer (EAB), Agrilus planipennis, a highly destructive invasive beetle. this expansion, announced Febuary 18, 2026, now encompasses a larger area in northern Illinois. Residents and businesses within the quarantine zone must adhere to specific regulations regarding the movement of ash wood products.
What is the Emerald Ash Borer?
the emerald ash borer is an invasive beetle native to Asia.It was first discovered in North America in 2002, and has as spread rapidly, devastating ash tree populations. The larvae feed on the inner bark of ash trees, disrupting their ability to transport water and nutrients. This ultimately leads to tree death.
Quarantine Details
The expanded quarantine zone now includes several additional counties in northern Illinois. A complete and updated list of quarantined counties is available on the Illinois Department of Agriculture website. The quarantine prohibits the movement of ash trees, ash wood (including firewood, lumber, and nursery stock), and ash wood products out of the quarantined area.
Why is a Quarantine Necessary?
Quarantines are crucial for slowing the spread of EAB. By restricting the movement of ash wood, officials aim to prevent the beetle from establishing itself in new areas. This buys time for communities to prepare for potential ash tree loss and implement management strategies.
Impact on Residents and Businesses
Residents within the quarantine zone are urged not to transport ash wood out of the area.This includes firewood for camping or heating. Businesses that handle ash wood, such as nurseries, lumberyards, and firewood dealers, must comply with the quarantine regulations.Penalties may apply for violations.
Identifying Emerald Ash Borer
Adult EAB beetles are small,metallic green insects. signs of infestation include D-shaped exit holes in ash tree bark, serpentine galleries under the bark, and canopy dieback. If you suspect an ash tree is infested,contact your local University of Illinois Extension office or the Illinois Department of Agriculture.
Management and Treatment Options
While EAB infestations are difficult to eradicate, several management options are available. These include insecticide treatments, tree removal, and replanting with non-ash species. Consult with a certified arborist for recommendations specific to your situation.Preventative insecticide treatments can protect high-value ash trees.
Resources
- Illinois Department of Agriculture – Emerald Ash Borer
- University of Illinois Extension
- Emerald Ash borer Information network
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