A robust Missouri and Illinois native perennial, Swamp Milkweed, Asclepias incarnata, delights with sweetly scented flowers in summer that attract pollinators. In summer, expect to be enchanted by the vanilla-scented pink flower clusters. These fragrant flowers bloom for about a month, attracting butterflies, especially Monarchs. While Swamp Milkweed prefers moist conditions, it can tolerant average to dry locations as well. Its 4-5″ willow-like leaves are a preferred food of Monarch caterpillars. Deer and rabbit resistant.

Asclepias, Milkweeds, and Monarch Butterflies have a specialized relationship critical to the Monarch’s survival.

• Host plant – Milkweeds are the only plants where Monarch Butterflies lay their eggs and their caterpillars feed.
• Food and shelter – Milkweed provides food and shelter for Monarch caterpillars. Monarchs and Milkweeds have co-evolved, with the Milkweed’s milky latex containing compounds poisonous to most other animals.
• Population decline – The loss of Milkweed is a significant factor in the decline of Monarch populations.
• Even a few Milkweed plants in a residential garden is a powerful tool for saving the Monarchs.

A Missouri Botanical Garden Plants of Merit. Plants were selected for their outstanding quality and dependable performance in the lower Midwest. They grow consistently well in St. Louis, Missouri, central and southern Illinois, and the Kansas City Metro area.

Plant in sunny locations. Although drought tolerant once established, keep well watered when first planted, when plants are setting up buds and blooming, and during dry spells.