My husband and I are both benefitting from it, and we are slightly over 13. 🙂 The books don’t have an age bracket, in my opinion. They are not childish.
If you want something more for your older boy, you could buy “Plants Grown Up” and have him work on things from whatever section coordinates with your LDTR habit. You can find used copies pretty inexpensively on Amazon. Or perhaps some books from Bob Schultz. Or JC Ryle’s “Thoughts for Young Men”. In our family, those would be in addition to LDTR, not instead of. LDTR should be done by the whole family together.
