Saturday, September 12, families and gardeners turned out at the Boonville Katy Depot for a Monarch Migration Tagging Workshop and Family Day, hosted by the Boonslick Master Gardeners. There were hands-on activities, short talks on monarch conservation and pollinator gardening, and door prizes for kids and adults, according to the Boonville Daily News. If you missed it, here’s what the fuss was about — and why a butterfly small enough to fit in your palm is worth a Saturday morning.
Every fall, the monarchs that spent the summer breeding across Missouri start moving south — not to somewhere nearby, but over 2,000 miles to a handful of mountain forests in central Mexico, according to the Missouri Department of Conservation. The butterflies making that trip right now are a special “super generation”: unlike their parents and grandparents, which lived only a few weeks and never left Missouri, this generation will live for months, ride air currents to save energy, and won’t mate or lay a single egg until they’re heading back north again next spring.
How they find their way is genuinely strange. MDC notes the butterflies use their eyes to track the sun’s position in the sky, paired with an internal clock housed in their antennae — a built-in compass that somehow gets a new generation of butterflies back to the same overwintering forests their great-great-grandparents used, without any of them having made the trip before.
The tagging itself is simple: a small, lightweight paper tag gets pressed onto a wing, numbered and logged. If that same butterfly turns up later — caught by another volunteer, or found in Mexico months from now — researchers can log exactly how far it got and how long the trip took. It’s citizen science in the most literal sense: nobody knows where any single tagged monarch will end up until someone finds it and reports the number back.
None of it works without milkweed. MDC’s guidance is specific: monarch caterpillars eat nothing else, so a garden patch needs at least 100 square feet of it, six-plus hours of sun, and native nectar plants to fuel the adults for the road. Light, well-drained soil helps the milkweed itself; heavy clay tends to rot the roots. For a town sitting right on the migration path, that’s a fairly easy way to help — plant milkweed this fall, and the monarchs passing through next September will have one more place to refuel.
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