When a brother and sister attempt to order a trillium plant, they are mistakenly sent a trillion trees. Inspired, the whole family gets to work on this massive project. Readers 5 to 8 already know the basics of counting, so this rhyming story introduces the concept of orders of magnitude, and celebrates the importance of planting different trees and preserving diverse ecosystems. Much as he did in Billions of Bricks, Kurt Cyrus illustrates this story in action-packed two-page spreads.