Mexican Milkweed Invasive. Bloodflower swallow wort butterfly weed mexican milkweed scarlet milkweed asclepias curassavica is naturalized in texas and other states and is a magnet for butterflies. It does re seed and may show up in other parts of the garden next year.
He dug me up one last year and we loved it. Note the black smudges on the leaves released from the pod. Milkweed species such as mexican whorled milkweed ascelpias fascicularis and showy milkweed ascelpias speciosa are considered invasive in some areas.
Loyola university new orleans is a member of.
It is not known whether mexican butterfly weed is. Photo by bob thomas. Most do not considered it invasive but there are those that wonder if it will push out the native milkweeds. Like many other milkweed species mexican butterfly weed is known to be toxic to humans cats dogs horses and livestock due to high levels of cardenolides.