Plant Therapy Top 6 USDA Certified Organic Essential Oils Set. Includes: Eucalyptus, Lavender, Orange, Peppermint, Lemon and Tea Tree. 10mL (1/3 Ounce) each. Posted: February 12th, 2017 — $29.95 Top 6 Organic Essential Oil Set Contains 10 ml Each of: Eucalyptus, Lavender, Sweet Orange, peppermint, Lemon and Tea Tree. Comes in an attractive wooden gift box.