Documenting milkweed (Asclepias spp.) and monarch distribution across the western U.S.
During the spring and summer, monarchs breed across the continental United States and parts of Southern Canada, and yet very little is known about where and when monarchs breed west of the Rocky Mountains. The Xerces Society and others are working to change this situation, and we could use your help!
Check out the new platform for accessing and contributing milkweed and monarch observations in the West:
A series of regional guides to the native milkweeds of North America, developed in cooperation with the USDA Natural Resources Conservation Service:
|California Native Milkweeds||Great Basin Native Milkweeds||Nevada Common Milkweeds|
|Oregon Native Milkweeds||Washington Native Milkweeds||Desert Southwest Native Milkweeds|