USDA says this plant is an "introduced", "noxious", "weed" in Arkansas and Arizona ("prohibited") It describes I. amnicola as perennial w...Read Moreith no zone given, so perhaps one can infer that this plant is perennial to the US southern states mentioned.
The International Plant Names Index gives I. amnicola's distribution as Paraguay, so perhaps that was where this plant came from.
USDA says this plant is an "introduced", "noxious", "weed" in Arkansas and Arizona ("prohibited") It describes I. amnicola as perennial w...Read More