International Monarch Monitoring Blitz

Every Observation Matters!

31 July to 9 August 2026

Celebrating 10 Years of North American Community Science!

The International Monarch Monitoring Blitz is back for its 10th anniversary! From 31 July to 9 August 2026, join the celebration and help search for monarch butterflies and milkweed plants in your area.

The Monarch Blitz is a community science initiative open to anyone in North America. Last year, over 9,000 volunteers contributed thousands of observations. For our 10th anniversary, help us reach our goal of 10 Years: 10,000 More Participants! 

For more information about joining this Project through iNaturalist, start here: International Monarch Monitoring Blitz