Rolfs’ Milkweed

Asclepias tuberosa ssp. rolfsii, commonly known as Rolfs’ Milkweed, is a subspecies of the butterfly weed native to the southeastern United States, particularly found in regions such as Florida, Alabama, and Mississippi. This perennial herb typically grows in well-drained, sandy soils and is often associated with open fields, prairies, and roadside habitats. Rolfs’ Milkweed exhibits a growth habit that can reach heights of 30 to 90 centimeters (approximately 12 to 36 inches), with a clumping form characterized by upright stems and a bushy appearance.

The leaves of Rolfs’ Milkweed are lanceolate to ovate, measuring 5 to 15 centimeters in length, and are arranged in an alternate pattern along the stem. The foliage is typically a vibrant green, providing a striking contrast to the bright orange to yellow flowers that bloom from late spring to early summer. The flowers are arranged in compact, umbel-like clusters and are known for their distinctive five-petaled corollas, which attract a variety of pollinators, particularly butterflies, including the monarch butterfly. Following the flowering period, the plant produces elongated, slender pods that contain numerous flat seeds equipped with silky tufts, facilitating wind dispersal.

Ecologically, Asclepias tuberosa ssp. rolfsii plays a significant role as a host plant for various species of butterflies, contributing to local biodiversity. Its nectar-rich flowers provide an important food source for pollinators, while the plant’s latex-rich sap can deter herbivory by some animals. In addition to its ecological importance, Rolfs’ Milkweed has been utilized in traditional medicine for its purported anti-inflammatory properties, although care should be taken due to its toxicity when consumed in large quantities. This subspecies is also adapted to thrive in drought-prone areas, making it a resilient choice for xeriscaping and native plant gardens.