Recent border-wall construction degraded another 20 acres of habitat that were proposed for protection last year to the point that they were unsuitable for the plant and withdrawn from designation.

By planting milkweed, you provide critical habitat and resources for these beautiful butterflies, helping to ensure their ...

A new study finds the number of butterflies has dropped 22% since 2000, a new study finds. Scientists blame insecticides, ...

Butterflies are vanishing nationwide due to habitat loss, climate change and use of insecticides, according to a new study, ...

A Pennsylvania butterfly farmer says listing the monarch as a threatened species could do more harm than good.

Grow milkweed (Asclepias) to support monarch butterflies, hummingbirds, and bees while adding color, fragrance, and beauty to your landscape. You’ll find native milkweeds throughout North and ...

A Pennsylvania butterfly farmer says listing the monarch as a threatened species could do more harm than good.

From this research, Oberhauser said one leading factor in the decline of monarch butterflies is the loss of breeding habitat. Monarch habitats contain milkweed hosts for the caterpillars and nectar ...