Asclepias tuberosa

Departments - Green Guide

Bring brilliant color and butterflies to the landscape with this native perennial.

November 7, 2016

Top photo, Walters Gardens; Bottom left, Hans Hansen; bottom right, Walters Gardens

If you’re late to the butterfly party, it’s time to add Asclepias tuberosa to your production schedule. And if you’re already growing it, it may be time to consider boosting your numbers. Butterflies are frequently in the news, and the Perennial Plant Association named A. tuberosa it’s 2017 Perennial of the Year. Get ready for your retail and landscape customers to be beating down the doors for this crop.

Walters Gardens calls butterfly weed a “virtually hassle-free, very long lived perennial, offering three months of tangerine orange blooms (occasionally red or yellow)... The flowers, which are heavily laden with nectar and pollen, are particularly attractive to hummingbirds, monarch butterflies, bees, and other beneficial insects.”

Besides monarchs, it’s also an important host plant for the caterpillars of grey hairstreak and queen butterflies.

After it flowers, green fruits develop which rupture to reveal seeds with long, silvery-white, silky hairs reminiscent of its cousin, common milkweed.

This species is unusual among milkweeds because its leaves are alternate and it lacks the typical milky sap. It grows 2-3 feet tall, and blooms from mid-summer through early fall.

Why grow Asclepias tuberosa?

  • Butterflies, butterflies and more butterflies (What a great plant to get children hooked on horticulture.)
  • Deer resistant
  • Adapts well to poor, dry soil.
  • North American native

Sources: Walters Gardens, Prairie Moon Nursery, Cornell University