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Western Monarchs

The Monarch Butterfly Life Cycle Coloring Sheet
Wings 49(1): Spring 2026 (Positive Stories)
Western Monarch Numbers Remain at Historic Low
El número de mariposas monarca occidentales se mantiene en un mínimo histórico
New Ultralight Radio Tags Are Tracking Monarch Butterflies in Santa Cruz
Study Links Pesticides to Monarch Butterfly Deaths in Pacific Grove
Western Monarch Butterfly Population Declines to Near Record Low
La población de mariposas monarca occidentales disminuye hasta alcanzar un mínimo casi histórico
Monarch butterfly proposed for listing under the US Endangered Species Act
Colorado’s Governor Signs Bill Authorizing State Wildlife Agency To Study And Conserve Pollinators And Other Invertebrates
Western Monarch Count Tallies 233,394 Butterflies
El conteo de la mariposa monarca occidenta registró 233,394 mariposas
Building Seed Supply of Early-Emerging Milkweeds and Late-Season Nectar Plants for Monarchs in California’s San Joaquin Valley
Western Monarch Overwintering Science Priority Themes
MONARCH Act Reintroduced to Aid Western Butterfly
Western Monarch Count Tallies Over 330,000 Butterflies
Western monarchs rebound to final tally of nearly 250,000 butterflies
Wings 44(2): Fall 2021 (New Directions)
The Xerces Society Provides Native Plants to Communities Protecting California’s Monarch Butterflies
Early Signs of Hope as Monarch Butterflies Return to California Overwintering Sites
Residents and Communities Step Up to Protect California’s Monarch Butterflies
Priority Action Zones in California for Recovering Western Monarchs
Western Monarch Butterfly Conservation Recommendations
Monarch Conservation
100 Plants to Feed the Monarch
Xerces Monarch and Pollinator Habitat Kits
Western Monarch Population Closer to Extinction; Still no Federal or State Protection in Sight
Monarch Butterfly Overwintering Site Management Plan for Pismo State Beach
Monarch Population in California Spiraling to Another Record Low
Conservation Actions for Electric Power Companies to Support Monarch Butterflies
Harmful Pesticides Found in Milkweeds Critical for Western Monarchs
Western Monarch Butterfly Population Still at Critical Level
Western Monarch Call to Action
Western Monarchs Are in Trouble: This Is How You Can Help
Monarch Nectar Plants: California
Monarch and Pollinator Habitat Kit: Planting Guide
A Quick Guide to Monarch Habitat on Farms in California’s Central Valley
Best Management Practices for Pollinators on Western Rangelands
Smarter Pest Management: Protecting Pollinators at Home
Roadside Habitat for Monarchs: Monarch Butterflies, Weeds, and Herbicides.
Roadside Habitat for Monarchs: Milkweeds of Florida
Roadside Habitat for Monarchs: Milkweeds of the Great Lakes
Roadside Habitat for Monarchs: Milkweeds of ID, OR & WA
Roadside Habitat for Monarchs: Milkweeds of KS & MO
Roadside Habitat for Monarchs: Milkweeds of MT & WY
Roadside Habitat for Monarchs: Milkweeds of NV & UT
Roadside Habitat for Monarchs: Milkweeds of AZ & NM
Roadside Habitat for Monarchs: Milkweeds of California
Roadside Habitat for Monarchs: Milkweeds of Colorado
Native Milkweed Planting and Establishment in the Western United States
Monarch Butterflies in Western North America in Jeopardy
Western Monarch Management Windows: Timing Management in Monarch Breeding Habitat
The Xerces Society Partnerships for Monarchs
Statement Regarding the Negative Impacts of Captive Breeding and Release of Monarchs
The Legal Status of Monarchs in California
Monarch Butterfly Site Management Plan for Lighthouse Field State Beach
Growing and Selling Native Milkweed
Monarch Butterfly Nectar Plant Lists for Conservation Plantings
Managing for Monarchs in the West
State of the Monarch Butterfly Overwintering Sites in California
Conservation Status and Ecology of the Monarch Butterfly in the U.S.
Monarch Nectar Plants: Rocky Mountains
Monarch Nectar Plants: Maritime Northwest
Monarch Nectar Plants: Inland Northwest
Monarch Nectar Plants: Great Basin
Recommended Plants: California Southern Coast Region
Recommended Plants: California Central Valley Region
Recommended Plants: California Central Coast Region
Maritime Northwest Citizen Science Monitoring Guide
California 422A Hedgerow Planting, Pollinators
California 327A Conservation Cover, Pollinators
Protecting California’s Butterfly Groves
Milkweeds: A Conservation Practitioner's Guide
A Guide to the Native Milkweeds of Washington
A Guide to the Native Milkweeds of Oregon
A Guide to Common Milkweeds of Nevada
Native Milkweeds: Pollinator Plants of the Desert Southwest
Roadsides as Habitat for Pollinators: Frequently Asked Questions
Roadsides as Habitat for Pollinators: Are Milkweeds Really Weeds?
Attracting Native Pollinators
Managing for Monarchs in the West
New Guidelines for Protecting California’s Monarch Butterfly Groves
Milkweeds and Monarchs in the Western U.S.
Letter of support for the legal petition seeking Endangered Species Act (ESA) protection for monarch butterflies
Scientist letter of support to protect the monarch butterfly as a Threatened species under the Endangered Species Act (ESA)
FAQs on the Monarch Butterfly Endangered Species Act Petition
Petition for Protection of the Monarch Butterfly Under the Endangered Species Act
Letter of support for a multi-agency monarch butterfly recovery initiative
Number of Monarch butterflies overwintering in California holds steady, but still well below the 1990s
Management Recommendations: Use of Native and Non Native Trees by Overwintering California Monarchs
Wings 36(2): Fall 2013 (Habitat)
A California Landowner's Guide to Managing Monarch Butterfly Overwintering Habitat
The Monarch Project's Conservation and Management Guidelines for Preserving the Monarch Butterfly Migration and Monarch Overwintering Habitat in California
Comments on Docket OPP-00678B (Comment on Implications of Revised Bt Corn Reassessment for Regulatory Decisions Affecting These Products, and on Potential Elements of Regulatory Options, August 28, 2001)