UC Master Gardeners helped transform a neglected site by a freeway offramp in Atascadero into a rest stop for migrating monarch butterflies.

A key monarch butterfly population is showing signs of improvement this year, but scientists warn the species remains in long-term decline.

The Center for Biological Diversity and Center for Food Safety are suing U.S. Fish and Wildlife to fast-track protections for the dwindling butterflies.

The eastern monarch population in Mexico saw a 64% increase while populations in California were the third lowest on record.

These flowers are gorgeous for you—and a feast for monarch butterflies.

Monarch butterflies begin their spring migration in March. Learn why milkweed, weather, and timing are crucial for rebuilding their population.