According to a study by the USDA, Swamp Milkweed and Common Milkweed were the most preferred host of all by Monarch butterflies, carrying the highest egg totals. The height and size of the a mature plant - reaching 4-5 tall by 2-3 feet wide - surely plays a factor in this, as well, as it’s easier for the monarch caterpillars to hide on a large specimen.

Swamp Milkweed, or Sweet Swamp Milkweed as it is referred to here, is also a major draw for Swallowtails, Sulphur’s, and numerous other species of butterfly. The sweet, vanilla-like scent of the flower umbels attracts pollinating moths at night, and a variety of pollinating beetles. Small bees are also visitors.

As the name suggests, Sweet Swamp Milkweed loves wet soils. It’s fantastic in rain gardens, near ponds, and in moist, clay soils. Ultimately, it will do well in any garden space that receives ample water.

Dig a hole 12 inches deep to work the soil before planting your Milkweed. Thoroughly water it after planting, and if there is no immediate rainfall thereafter, soak it again within 1-2 days to help establish the roots. Asclepias incarnata is best not be divided due to it’s tap root, but it will sometimes self sow. When grown in masses, Monarch activity can be prolific.