It carries a parasite of Monarch Butterflies referred to as Ophryocystis elektroscirrha, or OE, which may cause defects during the wings of Monarchs. Because it doesn’t die back again and may bloom late, the plant by itself may additionally confuse Monarchs by signaling a breeding year when it’s time emigrate. https://thebookmarknight.com/story18394701/the-definitive-guide-to-what-are-milkweed-plants