Just a few years ago, the eastern monarch was considered endangered by the International Union for Conservation of Nature ...

These late-blooming plants native to North America help feed butterflies — especially monarchs-— at a crucial point.

As the sole plant that hosts and feeds monarch caterpillars, milkweed (Asclepias species) is key to their survival. Happily, wherever you garden in the U.S., there’s a native type of milkweed ...

You can help make a difference by providing the species with its food plant: milkweed. A monarch butterfly gliding over a field on outstretched wings is one of the most beautiful images of summer.

Butterfly milkweed has lots of ornamental appeal. This adaptable milkweed is hardy in many zones and was named the 2017 Perennial Plant of the Year.

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

All populations of the milkweed in the United States are within nine miles of the border, making it one of hundreds of species threatened by wall construction. “Protecting prostrate milkweed is a big ...