ND Invasives
The Emerald Ash Borer (EAB)
EAB has NOT been detected in North Dakota. Unfortunately, it is believed that EAB may reach the state in the coming years.
EAB is...
...native to eastern Asia, the emerald ash borer (EAB) Agrilus planipennis, was first discovered near Detroit, Michigan in 2002. Scientists believe that it was unintentionally brought into the U.S. inside infested ash crating or pallets. Since its initial discovery, the insect has been found in 15 states and 2 Canadian Provinces, including adjacent Minnesota (as of September, 2011).
The damage caused by this pest has been astonishing. Unlike native ash-boring beetles that only kill weakened and dying trees, EAB attacks all ash trees regardless of their vigor, size, or age. More than 25 million ash trees have been destroyed by the insect representing a significant economic cost to municipalities, property owners, nursery operators and forest products industries. Primary long-distance spread is thought to occur via infested firewood and may also spread by infested nursery stock.
Click here to see a map of where EAB is currently found.
Do you think you have seen an EAB? Compare what you have found with North Dakota EAB look alike insects.
Why is EAB a problem?
- EAB attacks all types of ash trees in the genus Fraxinus, including green ash.
- Green ash comprises more than 30% of ND conservation plantings, such as shelterbelts.
- Green ash comprises more than 50% of natural riparian forests in ND.
- In the past green ash was often selected as a replacement tree following the large-scale elm mortality due to the exotic fungus causing Dutch elm disease.
What would be the main impacts of EAB infestation in North Dakota?
- Large-scale loss of green ash in urban and rural plantings and natural forests.
- High tree removal and replacement costs for cities and towns (many ND communities have over 65% green ash boulevard trees).
- Drastic habitat change in natural forest areas and riparian (riverside) areas.
- Negative impacts on water quality and aquatic life due to the loss of canopy trees in riparian forests.
- Major reduction in resource conservation and crop protection benefits due to loss of shelterbelts
What can citizens do to help prevent EAB from reaching North Dakota?
- Do NOT bring firewood from out-of-state.
- Only use local North Dakota sources of firewood. Firewood Alert
More information about: EAB Biology and Identification.
More information about: The Resource at Risk in North Dakota associated with EAB infestation.
If you suspect that you have encountered an invasive tree pest in North Dakota, click here for assistance.
