Norway maple has been reported to be invasive throughout the northeastern U.S. from Maine to Wisconsin, south to Tennessee and Virginia and also in the Pacific Northwest. Over time, as reforestation occurred across the Northeast, Norway maple joined native tree species as a component of eastern forest ecosystems.

Are red maples bad?

Only the red maple (Acer rubrum) and possibly closely related hybrids are known to be toxic. The toxin in red maples oxidizes hemoglobin with the formation of Heinz bodies, methemoglobinemia and subsequent hemolytic anemia.

Are maple trees invasive?

Silver maple tree Silver maple trees have incredibly shallow, fast-growing roots. They might be prized for their vibrant colour in autumn, but their root systems are one of the most invasive of all. As the roots enlarge, silver maple trees have been known to crack driveways, pavements, foundations and pipes.