Nana's Green Thumbs - Hardcoverby Lisa Stopay (Author), Oksana Matiikiv (Illustrator) Nana adores gardening. It's not just one green thumb she has; she's got two! Gardening fills Nana's heart with joy and peace. That's why she loves to share her gardening magic with her sweet granddaughter, Leah. On their walks through Nana's beautiful garden, Leah discovers all sorts of amazing flowers. Her absolute favorite for fall is the mums, and she thinks it's such a cool name for a flower.