It carries a parasite of Monarch Butterflies known as Ophryocystis elektroscirrha, or OE, that may lead to defects in the wings of Monarchs. Because it doesn’t die again and can bloom late, the plant by itself could also confuse Monarchs by signaling a breeding season when it’s time to migrate. https://ismilkweedanannualorperen97429.blogsvila.com/31041828/the-5-second-trick-for-are-butterfly-milkweed-perennials