Butterfly Day at Herff Farm is a family-friendly celebration of all things winged, held at the Teaching Garden at Herff Farm in Boerne. Running alongside the Farmers Market, it's a come-and-go morning of hands-on activities and educational experiences that help you learn more about butterflies. Activities include butterfly tagging and OE testing, a fun way to see science up close. It's a relaxed morning out for families, nature lovers and curious kids.