It carries a parasite of Monarch Butterflies termed Ophryocystis elektroscirrha, or OE, which often can bring about defects while in the wings of Monarchs. Because it doesn’t die back again and might bloom late, the plant alone could also confuse Monarchs by signaling a breeding time when it’s time emigrate. https://sound-social.com/story8361889/the-ultimate-guide-to-what-is-a-milkweed-plant