Families are invited to a flutter-tastic Spring Equinox celebration at the Monarch Haven and Reading Sanctuary at Red Mountain Library! Immerse yourself in the world of monarch butterflies with experts from the Southwest Monarch Study and the Desert Botanical Garden. Kids can enjoy hands-on activities at the library’s craft tables or make Sonoran Desert native wildflower seed bombs with the M.O.R.E. (Mesa Outdoor Recreation Experience) mobile unit. Chat with city landscape experts, Master Gardeners, and other exhibitors about plants, trees, and sustainable gardening. Don’t miss your chance to win cool prizes—like an origami butterfly! Plus, raffles and surprises await. It’s a nature-filled morning of fun for the whole family!

The spring equinox marks the official start of spring in the Northern Hemisphere, occurring when the sun crosses the equator. In Mesa, this celestial event happens on Thursday, March 20, 2025, at 2:01 a.m.