Tropical Milkweed | There are a lot of misinformation floating around the internet about this plant. You may have seen that the tropical milkweeds can disrupt the migration of the Monarchs and allow disease to spread among them. This is true only in certain areas. Here in the Louisville area our winters kill it off and the first hard freeze of the year will defoliate the plant which eliminates any of the concern. Where the plant can be a problem are in the subtropical areas along the gulf coast and deep south where it will remain evergreen all winter and hold the butterflies in the area all winter. We like to offer this plant for its fast growth which allows people who want to raise a bunch of Monarchs an option for the hungry, hungry caterpillars. We do recommend planting our native milkweeds at the same time in the garden to down the road you will have plenty of food for both wild Monarchs and any you may be raising in captivity.