I am along time fan of Ben Hatke from his Zita the Spacegirl series and this book did not disappoint. Jack struggles to bare the responsibly of looking after his fragile younger sister Maddy while his mother works long hours away from home all summer. Maddy never speaks- until a mysterious box of seeds at the flea market catches her eye and she asks for it. Amazed, Jack end up trading the keys to his mother's car for the seed box, which lands him in all kinds of trouble. But when they plant the seeds and end up with a fantasy garden of moving, living plants, it seems to have been worth it. But not all of the plants are friendly, and all are more than they seem. It did raise my eyebrows a little at the very end, when a plot twist occurred that was extremely similar to a plot twist in the first Zita book. But I'll wait until Mighty Jack book 2 until I judge it.