Green Tara is the female counterpart of the bodhisattva Avalokiteshvara. Hence she too like him is said to be the very embodiment of compassion, protecting the devotee from the eight great perils: lions (= pride), wild elephants (= delusion/ignorance), fires (= hatred and anger), snakes (= jealousy), bandits and thieves (= wrong views, including fanatical views), bondage (= avarice and miserliness), floods (= desire and attachment), and evil spirits and demons (= deluded doubts).
This marvelous rendition of this great goddess, extremely rich in spiritual aesthetics and visual appeal, both helpful tools in meditation, is ideal for the sadhana of Green Tara. Sadhanas in which Tara is the meditational deity can be extensive or quite brief. Most all of them include some introductory praises or homages to invoke her presence and prayers of taking refuge. Then her mantra is recited, followed by a visualization of her, perhaps more mantra, then the visualization is dissolved, followed by a dedication of the merit from doing the practice. Additionally there may be extra prayers of aspirations, and a long life prayer for the Lama who originated the practice. Many of the Tara sadhanas are seen as beginning practices within the world of Vajrayana Buddhism, however what is taking place during the visualization of the deity actually invokes some of the most sublime teachings of all Buddhism.
The results of Tārā practices are many. For one thing it reduces the forces of delusion in the forms of negative karma, sickness, afflictions of kleshas, and other obstacles and obscurations. The mantra oṃ tāre tuttāre ture svāhā (common to both Hindus and Buddhists), helps generate Bodhicitta within the heart of the practitioner and purifies the psychic channels (nadis) within the body allowing a more natural expression of generosity and compassion to flow from the heart center. Through experiencing Tārā's perfected form one acknowledges one's own perfected form, that is one's intrinsic Buddha nature, which is usually covered over by obscurations and clinging to dualistic phenomena as being inherently real and permanent.