Johnson County Extension Master Naturalists are planning their annual Hasta Luego (until later) Monarchs! celebration from 9 a.m. to 2 p.m. Saturday, Sept. 24, at the Pollinator Prairie, 320 S. Blake St., near downtown Olathe.

Monarch butterflies have an annual four- generation migration that takes them from Mexico in the spring north to Canada and beyond, and then back to Mexico in the fall. The peak of monarch activity is September in Johnson County.

The free public family-friendly event will feature educational booths and fun activities for children.

The group “Monarch Watch” will share their knowledge about the monarch butterfly, how to protect the struggling species and tag some monarchs for release in tracking in their migration.

Master naturalists, a volunteer program of the Johnson County K-State Extension Service, have sponsored a Monarch Watch for eight years.

More information is available by calling 913-715-7000.