ylang is a yellow, star-shaped flower that grows on the Cananga tree (Cananga odorata). This tropical species is native to countries surrounding the Indian Ocean, such as India, the Philippines, Malaysia, Indonesia, and parts of Australia. Ylang ylang’s heady, aromatic scent is fruity, flowery, and rich.
The ylang ylang flower is used to make several types of essential oil, via steam distillation. The oils vary in the intensity of their scent
source : https://www.healthline.com/health/ylang-ylang