The map below shows where sericea is the most aggressive, but it is found elsewhere, too (as land managers in New York could tell you!)

Lespedeza was originally spread widely be people for use as forage, erosion control, and as a green manure. It spreads rapidly because of the large amount of seed it produces. It has been declared a noxious weed in some areas, meaning it is illegal to grow!

...click on the map of the USA above to see another weed!