Butterfly weed - Asclepias tuberosa

Features: This is the only milkweed native to Illinois that has orange flowers. It is a well-behaved, eye-catching garden plant and a popular nectar source for many butterflies, bees, wasps and hummingbirds. It is also a food source for caterpillars.

Light: Full to partial sun

Soil: Dry to medium

Height:  1-2 feet

Blooms: July to September

See more information and photos at: Illinois Wildflowers and USDA Plants Database 

Photo 2: Stephanie Walquist, West Cook Wild Ones