Monarch Monitoring Blitz 2025

It’s time for the International Monarch Monitoring Blitz! From July 25 to August 3, join us by spotting monarch eggs, caterpillars, adults or milkweed plants, and report your sightings to iNaturalist, Journey North, Monarch Larva Monitoring Project and Western Monarch Milkweed Mapper.

The information collected by North American community science observers helps researchers identify priority areas for monarch conservation actions. Thanks to our engaged community of observers, monarch researchers can analyze summer breeding population trends.

Last year’s submitted observations included more than 16,000 monarch sightings and more than 68,000 milkweeds!

Learn more:

https://www.fws.gov/story/2025-07/join-monarch-blitz-july-25-august-3-2025 or