Fabulous read for 8-14, very boy-friendly read, too. Building with wood and Adventures, very boy-friendly. Which is why the title is about Firefly Field and not Faeries. Shhh.
The text about the Firefly culture was a little slow in one area where it was a lot of information and my brain went "yadda, yadda, back to something ELSE please" And right after that, the author DID do something else, and a little further into the book, I saw why the extra load of information was necessary to the plot. So, I stand corrected.
The time between books cleverly mirrors the kids' wait for seasonal change! I would definitely recommend this to (parents of) kids of the right age. I would probably read the entire series if I could. I just might! Because age is just a number!