Western Monarch Milkweed Mapper on the Land Conservation Assistance Network

Western Monarch Milkweed Mapper
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last updated: June 2022

This project is part of a collaborative effort to map and better understand monarch butterflies and their host plants across the Western U.S. Data compiled through this project will improve our understanding of the distribution and phenology of monarchs and milkweeds, identify important breeding areas, and help us better understand monarch conservation needs. Some of the key research questions that these data will help us answer include:

Where are different milkweed species growing in the West?
Where are monarchs occurring in the West?
Where are monarchs breeding in the West?
When is milkweed emerging and senescing (dying back) in the West?
How does milkweed phenology (life cycle) differ by species?
When is monarch breeding occurring in specific areas/regions of the West?
What types of habitats are different milkweed species associated with?

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REMINDER: This listing is a free service of LandCAN.
Western Monarch Milkweed Mapper is not employed by or affiliated with the Land Conservation Assistance Network, and the Network does not certify or guarantee their services. The reader must perform their own due diligence and use their own judgment in the selection of any professional.