Some plants such as trees and shrubs have woody trunks which yield aromatic essential oils. These woody parts are responsible for providing core stability and directing essential water and nutrients from the roots into the stems, leaves and flowers. Essential oils derived from woods include Amyris, Cedarwood, Rosewood and Sandalwood.Woody essential oils tend to provide core support, balance, and strength. They are excellent if you need to feel more centred and are great for aiding meditation. Similar to oils from leaves, needles and stems, they also have an affinity with the respiratory system.