Introduced Areas
Myriophyllum spicatum was likely first introduced to North America in the 1940s where it has become an invasive species in some areas. By the mid 1970's, watermilfoil had covered thousands of hectares in British Columbia and Ontario, Canada. Eurasian watermilfoil is now found across most of North America and recognized as a noxious weed.
Read more about this topic: Myriophyllum Spicatum
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