This is solid middle-grade fantasy that does what it's supposed to do. Linda Sue Park knows how to write for this age group, and the apothecary angle gives it a unique hook that feels educational without being a textbook.

The animal mistreatment stuff is real but handled appropriately—it's not gratuitous, and the whole point is that Raffa's trying to fix it. If your kid cried during the dog shelter commercials, give them a heads up, but it's not nightmare fuel.

The real win here is that it sneaks in environmental ethics and scientific thinking while kids are just trying to figure out what the glowing plant does. It's the kind of book that keeps reluctant readers engaged while giving book-loving kids something to chew on. Not groundbreaking, but genuinely good.