Question: Is it acceptable to plant butterfly bushes in Maine if they are sterile? Answer: Lynne Holland, Community Education Assistant (Home Horticulture), Androscoggin and Sagadahoc Counties That is a great question and it also brings up a problem we often face-the use of common names for items that have both invasive and non-invasive members in read more Is it acceptable to plant butterfly bushes in Maine if they are sterile?