Whole Flower USDA Organic Herbal Supplement Certified Organic by Organic Certifiers We prepare our Calendula Oil from the whole flower of Calendula officinalis plants which are Certified Organically Grown on our own farm. To assure optimal extraction of Calendula's bioactive compounds, the flower is hand-harvested while in full bloom, and is carefully shade-dried to retain its full color & aroma. The flower is then thoroughly extracted and concentrated into cold-pressed, certified organic olive oil.