Textbooks

• Cullina, William. Native Trees, Shrubs, and Vines.

• Dirr, Michael. Manual of Woody Landscape Plants. 

• Sibley, David Allen. The Sibley Guide to Trees.

• Watte, May. Tree Finder Booklet

• Wojtech, Michael. Bark: A Field Guide to Trees of the Northeast.

Websites

• What is that Tree? Arbor Day Foundation. https://www.arborday.org/trees/whattree/whattree.cfm?ItemID=E6A

• Tree I.D. Key. Virginia Tech. https://dendro.cnre.vt.edu/dendrology/idit.htm

• Trees and Shrubs for the Home Garden. https://extension.umd.edu/resource/trees-and-shrubs-home-garden/

• Tree Planting for Lower Power Bills. https://trees-energy-conservation.extension.org/tree-planting-for-lower-power-bills/#:~:text=Whether%20it%20is%20winter%20or,you%20save%20energy%20at%20home.&text=Did%20you%20know%20that%20only,an%20additional%20%2420%20per%20month

PDFs

• Leaf Keys to Common Trees in Maryland.  https://campus.extension.org/pluginfile.php/1086412/mod_page/content/16/EB-238_Leaf_Key_to_Common_Trees_in_MD.pdf

• How to Kill a Tree poster. https://campus.extension.org/pluginfile.php/1086412/mod_page/content/16/How-to-Kill-a-Tree_poster.pdf

• Varied Shapes Create Attractive Landscapes. https://campus.extension.org/pluginfile.php/1086412/mod_page/content/16/Varied%20shapes%20in%20landscape.pdf