Milkweed, the common name of the genus Asclepias, is an incredibly popular and diverse native plant that grows across the United States, from the Northeast to the Great Lakes to the Southwest.

The U.S. Fish and Wildlife Service on Tuesday proposed to add the monarch butterfly to the threatened species list.

Right now, Congress has a chance to fund similar programs in Florida and beyond through the Monarch and Pollinator Highway ...

One reason monarchs have struggled is that their primary food source, milkweed plants, is disappearing. Milkweed once commonly grew in rural areas across the nation but new herbicides, development ...

The U.S. Fish and Wildlife Service has proposed to list monarch butterflie as threatened under the Endangered Species Act.

New protections for monarch butterflies are in the works as the U.S. Fish and Wildlife Service proposes a new rule.

The U.S. Fish and Wildlife Service is proposing the Monarch Butterly be protected under The Endangered Species Act. The ...

Steve Huxley took this photo in the Valley of what appears to be a somewhat weathered Callippe Fritillary (Speyeria callippe) ...