Start your Saturday morning in the garden at the Twelve Hills Nature Center workday from 8–10 a.m. Bring garden tools—gloves, trowels, shovels, clippers and water—and help remove invasive plants in the Center’s butterfly garden. If it’s raining, the workday will be cancelled.

Twelve Hills is an Oak Cliff urban preserve that serves as an outdoor classroom, a recreational area and a mighty nice place to take a walk.

Contact Ellen Calhoun at with questions or to RSVP.