Lavender is a genus of 39 plant species in the mint family that are native to Europe, Africa, and Asia. Many lavender species are cultivated for their ornamental purple flowers and valuable essential oils. Lavender leaves are covered in fine hairs containing the medicinal essential oils. Lavender flowers are used to flavor foods and make honey, while lavender oil has antiseptic, anti-inflammatory, and anti-depressant properties and is used for aromatherapy and to treat various conditions.