The number of monarch butterflies overwintering this year in Mexico has nearly doubled, according to the 2025 annual census.

The monarch butterfly is one of many insects threatened by human-caused means, but Monarch Watch may have a solution.

The eastern monarch butterfly population nearly doubled in 2025, but the numbers remain far below the long-term average.

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

March in New England brings the earliest signs of spring. Plants that have been dormant all winter start to wake up and so do ...

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

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

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