Agrippa, Henry Cornelius. Three Books of Occult Philosophy. Edited by Donald Tyson. 1655 reprint. St. Paul, MN: Llewellyn Publications, 1997.
Andrews, Ted. Nature-Speak: Signs, Omens, and Messages in Nature. Jackson, TN: Dragonhawk Publishing, 2004.
Arbor Day Foundation. What Tree Is That? A Guide to the More Common Trees Found in Eastern and Central U.S. Nebraska City, NE: Arbor Day Foundation, 2008.
Beyerl, Paul. The Master Book of Herbalism. Custer, WA: Phoenix Publishing Inc., 1984.
Blamires, Steve. Celtic Tree Mysteries: Secrets of the Ogham. St. Paul, MN: Llewellyn Publications, 1997.
Bopp, Judie, Michael Bopp, Lee Brown, and Phil Lane Jr. The Sacred Tree: Reflections on Native American Spirituality. Twin Lakes, WI: Lotus Light Publications, 1989.
Bowes, Susan. Life Magic: The Power of Positive Witchcraft. New York: Simon & Schuster Editions, 1999.
Caldecott, Moyra. Myths of the Sacred Tree. Rochester, VT: Destiny Books, 1993.
Carter, Mark. Stalking the Goddess. Alresford, Hants, UK: Moon Books, 2012.
Coombes, Allen J. Trees: The Visual Guide to More than 500 Species of Trees from Around the World. New York: DK Publishing, 1992.
Crockett, James Underwood. Evergreens. New York: Time Life Books, 1971.
Cunningham, Scott. Cunningham’s Encyclopedia of Magical Herbs. St. Paul, MN: Llewellyn Publications, 1985.
———. Earth Power: Techniques of Natural Magic. St. Paul, MN: Llewellyn Publications, 1983.
———. The Complete Book of Incense, Oils, & Brews. St. Paul, MN: Llewellyn Publications, 1989.
Dirr, Michael A. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses. Champaign, IL: Stipes Publishing L.L.C., 2009
Drew, A.J. A Wiccan Bible: Exploring the Mysteries of the Craft from Birth toSummerland. Franklin Lakes, NJ: New Page Books, 2003.
Erdoes, Richard, and Alfonso Ortiz. American Indian Myths and Legends. NY: Pantheon Books, 1984.
Farrar, Janet, and Stewart Farrar. The Witches’ God. Custer, WA: Phoenix Publishing, 1989.
Ferm, Vergilius, ed. Living Schools of Religion. Paterson, NJ: Littlefield, Adams & Co., 1965.
Fortune, Dion. Psychic Self-Defense. York Beach, ME: Samuel Weiser, Inc., 1992.
Frye, Northrop. The Great Code: The Bible and Literature. New York: Harcourt Brace Jovanovich Publishers, 1981.
Graves, Robert. The White Goddess. New York: The Noonday Press, 1988.
Grimassi, Raven. The Wiccan Mysteries: Ancient Origins & Teachings. St. Paul, MN: Llewellyn Publications, 1997.
Guinness, Alma E., ed. Joy of Nature: How to Observe and Appreciate the Great Outdoors. Pleasantville, NY: Reader’s Digest, 1977.
Hageneder, Fred. The Meaning of Trees: Botany, History, Healing, and Lore. San Francisco, CA: Chronicle Books LLC, 2005.
The Holy Bible: New International Version. Grand Rapids, MI: Zondervan Publishing House, 1984. Copyright 1973, 1978, 1984 by International Bible Society.
Kilmer, Joyce. “Trees.” In Trees and Other Poems. New York: George H. Doran Company, 1914.
Kloss, Jethro. Back to Eden. Loma Linda, CA: Back to Eden Books, 1982.
Linford, Jenny. The Tree: Wonder of The Natural World. New York: Barnes & Noble, Inc., by arrangement with Parragon Books Ltd., 2006.
Little, Elbert, L. National Audubon Society Field Guide to North American Trees: Eastern Region. New York: Alfred A. Knopf, Inc, 1980.
Lowery, Linda, and Richard Keep. The Chocolate Tree: A Mayan Folktale. Minneapolis, MN: Lerner Publishing Group, Inc, 2009.
Matthews, John, and Will Worthington. The Green Man Tree Oracle: Ancient Wisdom from the Spirit of Nature. New York: Metro Books, 2008.
Monroe, Douglas. The 21 Lessons of Merlyn: A Study in Druid Magic & Lore. St. Paul, MN: Llewellyn Publications, 1992.
Moura, Ann. Green Witchcraft: Folk Magic, Fairy Lore & Herb Craft. St. Paul, MN: Llewellyn Publications, 1996.
O’Connell, Mark, and Raje Airey. The Complete Encyclopedia of Signs & Symbols: Identification and Analysis of the Visual Vocabulary that Formulates Our Thoughts and Dictates Our Reactions to the World Around Us. London, UK: Hermes House, 2005, 2006.
Penczak, Christopher. The Living Temple of Witchcraft, Volume Two: The Journey of the God. Woodbury, MN: Llewellyn Publications, 2009.
———. The Temple of High Witchcraft: Ceremonies, Spheres and the Witches’ Qabalah.Woodbury, MN: Llewellyn Publications, 2007.
Pepper, Elizabeth. Celtic Tree Magic. Middletown, RI: The Witches’ Almanac, LTD., 1996.
Phillips, Roger. Trees of North America and Europe: A Photographic Guide to More Than 500 Trees. New York: Random House, Inc., 1978.
Scheffel, Richard L., ed. ABC’s of Nature. Pleasantville, NY: The Reader’s Digest Association, Inc., 1984.
Silverstein, Shel. The Giving Tree. New York: Harper & Row, 1964.
Smith, Joseph. The Book of Mormon: Another Testament of Jesus Christ. Salt Lake City, UT: Intellectual Reserve, Inc., 1981.
Stewart, Amy. Wicked Plants: The Weed that Killed Lincoln’s Mother & other Atrocities. Chapel Hill, NC: Algonquin Books of Chapel Hill, 2009.
Tekiela, Stan. Trees of Illinois: Field Guide. Cambridge, MN: Adventure Publications, Inc., 2006.
Valiente, Doreen. Natural Magic. Custer, WA: Phoenix Publishing Inc., 1975.
Webster, Richard. Flower and Tree Magic: Discover the Natural Enchantment around You. Woodbury, MN: Llewellyn Publications, 2008.
Weiner, Michael A. Earth Medicine-Earth Foods: Plant Remedies, Drugs, and Natural Foods of the North American Indians. New York: The Macmillan Company, 1972.
Zell, Oberon. Grimoire for the Apprentice Wizard. Franklin Lakes, NJ: New Page Books, 2004.
Online Sources
“Ancient Egypt: The Mythology.” Accessed September 22, 2010. http://www.egyptianmyths.net/tree.htm.
Atsma, Aaron. “Flora 2: Plants of Greek Myth.” The Theoi Project: Greek MythologyAuckland, New Zealand, 2000–2011. Accessed November 18, 2010. http://www.theoi.com/Flora2.html.
“Benefits of Buckthorn Herb.” Liveandfeel.com, 2006–2013. Accessed May 27, 2012. http://www.liveandfeel.com/medicinalplants/buckthorn.html.
Bond, Annie B. “Your Celtic Tree Horoscope.” CARE2.COM, INC. January 15, 2007. Accessed January 13, 2011. http://www.care2.com/greenliving/your-celtic-tree-horoscope.html.
Brand, Mark H. “Plant UConn: Database of Trees, Shrubs, and Vines.” Accessed July 12, 2012. http://www.hort.uconn.edu/plants/index.html.
“Celtic Tree Calendar and Ogham.” July 04, 2010. http://www.angelfire.com/wizard2/celticoghamtrees/
Christenson, Allen, J. “The Sacred Tree of the Ancient Maya.” Provo, UT: 1997. Accessed July 07, 2010. http://maxwellinstitute.byu.edu/publications/jbms/?vol=6&num=1&id=133.
Dale, C. James. “In Japan, healthy minds rejuvenate in healthy forests.” October 08, 2010. Accessed January 21, 2013. http://www.theglobeandmail.com/life/travel/destinations/in-japan-rejuvenate-in-healthy-forests/article4266258/.
DragonOak.com. “Magical Properties of Trees and Wood Magick.” Accessed November 15, 2010. http://www.dragonoak.com/Magical-Wood-Properties.html.
Fields, Rick. “Who is the Buddha? The Life Story of the Historical Buddha, Siddhartha Gautama.” Accessed Aug. 12, 2018. https://tricycle.org/magazine/who-was-buddha-2/.
Mancuso, Stefano. “The Roots of Plant Intelligence.” TEDGlobal: 2010. October 15, 2010. http://www.ted.com/talks/stefano_mancuso_the_roots_of_plant_intelligence.html.
Musselman, L.J. “Trees in the Koran and the Bible.” Accessed 08, 2010. Norfolk, VA. http://www.fao.org/docrep/005/y9882E/y9882e11.htm.
Parsons, John J. “Hebrew for Christians: The Letter Yod.” Accessed September 22, 2010. http://www.hebrew4christians.com/Grammar/Unit_One/Aleph-Bet/Yod/yod.html.
Prontes, Isabel. “Elder Tree Facts.” Accessed August 12, 2010. http://www.gardenguides.com/117135-elder-tree.htm.
Robbins, Stuart. “Exposing PseudoAstronomy: Sizes of Solar System Objects.” December 18, 2008. Accessed November 26, 2011. http://pseudoastro.wordpress.com/tag/sun-400-times-larger-than-the-moon/.
Root, Jeff. “Earth and Moon to Scale.” February 18, 2003. Accessed November 26, 2011. http://www.freemars.org/jeff/planets/Luna/Luna.htm.
“Sacred Trees.” Accessed November 11, 2010. http://www.goddessnames.net/sacredtrees.html.
Smith, Richard Gordon. “Ancient Tales and Folk-lore of Japan.” Accessed Dec. 27, 2018. http://www.sacred-texts.com/shi/atfj/atfj04.htm.
Swanson, Jan. “Hermetic Qabalah: The Qabalistic Tree.” April 2007. Accessed Dec. 29, 2018. https://qisync.net/ecognosis/topics/Hermeticism/Qabalah.html.
“The Story of the Sacred Tree.” September 11, 2010. http://nwindian.evergreen.edu/curriculum/SacredTree.pdf.
“The Trees of Illinois Wesleyan Arboretum.” Accessed May 03, 2010. http://www.iwu.edu/treemap/.
“Trees of North America.” Accessed May 31, 2010. http://treesofnorthamerica.net/.
“The Wiccan Rede Explained.” Wiccan Universe, 2019.
http://www.wiccanuniverse.com/blog/the-wiccan-rede-explained/. Accessed June 18, 2019.
Witcombe, Christopher L.C.E. “Sacred Places: Trees and the Sacred.” Sweet Briar College, VA: 1998. Accessed July 08, 2010. http://witcombe.sbc.edu/sacredplaces/trees.html.