Leptospermum petersonii (or Leptospermum citratum), lemon-scented teatree is a tall shrub to small tree, growing to a maximum of 5 metres which is cultivated as an ornamental and for essential oils. It naturally occurs near sclerophyll forest or rainforest, on sandy or rocky escarpements, on the east coast of Australia. It has simple leaves, 20–40 mm long, with a distinctive lemony aroma. The flowers are white, followed by woody capsules.