Ehlert, Lois creator Wisconsin 1st. ed. 40 p. 0 x 0.33 x 10 inches (hardcover) Lois Ehlert uses watercolor collage and pieces of actual seeds, fabric, wire, and roots in this innovative and rich introduction to the life of a tree. A special glossary explains how roots absorb nutrients, what photosynthesis is, how sap circulates, and other facts about trees. Children's Literature Seed Growing Non-Fiction Plants Trees 032903510X 124531