A good choice for butterfly gardens due to its non-invasive nature. Though not as commonly offered for sale as other milkweeds, Purple Milkweed is worth searching out for its deep purple, showy flowers.
In addition to Monarchs, Purple Milkweed provides nectar for a wide variety of butterflies including Swallowtails, Red Admirals, Hairstreaks, and Fritillaries.
Like all milkweeds, Purple Milkweed is a food source for the Monarch caterpillar. Plant for plant, Purple Milkweed does not produce as much foliage as other milkweeds, such as Swamp Milkweed, and therefore does not provide as great a food source for caterpillars.