Sylvania, #1 by Kristin Kemper (illus.)
Sylvania, issue 1
Sylvania is a YA comic book series about three sisters — Juniper, Willow, and Rowan — who are tree witches, meaning their magic affects plants. When the story begins, the star witches, who seem to live in space, are seeking volunteers to help them terraform Mars. They gain recruits from the tree, fish, and bird witches, who they send to space to help on the project.
Of the sisters, Rowan, the youngest, really wants to go to Mars. She wants to be able to use her magic like her older sisters can. Willow, the middle one, is deeply committed to the forest and can’t imagine leaving it while the eldest, Juniper, is willing to consider the venture to Mars. One of them leaves the forest behind for the unknown among the stars. (Goodreads)