The state agriculture department said in a statement that Agriculture Commissioner Steve Troxler signed an emergency order Thursday expanding the quarantine for the emerald ash borer to include the entire state.
The quarantine means that ash trees cannot be moved into non-quarantined areas.
Troxler said he expanded the state's quarantine after the beetle was found across the state, including near the state lines with South Carolina, Tennessee and Virginia.
The department says firewood that has been treated, certified and labeled according to federal regulations can be moved outside the quarantine area.
The beetle was first found in Michigan in 2002. It's been blamed for the death or decline of tens of millions of ash trees across the nation.
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